2005-NMCA-035 109 P.3d 768

#### Beatrice C. ROMERO and Michael Ferree, on behalf of themselves and all others similarly situated, Plaintiffs-Appellees, v. PHILIP MORRIS INCORPORATED, R.J. Reynolds Tobacco Co., Brown & Williamson Tobacco Corp., Lorillard Tobacco Co., Liggett Group, Inc., and Brooke Group, Ltd., Defendants-Appellants.

No. 24,034.

Court of Appeals of New Mexico.

Feb. 8, 2005.

*230Gabrielle M. Valdez, Eaton, Martinez, Hart & Valdez, P.C., Shane Charles Youtz, Youngdahl, Youtz & Youngdahl, P.C., Pilar Vaile, N.M. Ctr. on Law & Poverty, Albuquerque, NM, Jonathan W. Cuneo, Daniel Cohen, The Cuneo Law Group, P.C., Washington, DC, Gordon Ball, Law Offices of Gordon Ball, Knoxville, TN, for Appellees.

Eric R. Burris, Brownstein, Hyatt & Farber, P.C., Albuquerque, NM, Michael T. Williams, Heller, Heller, Ehrman, L.L.P., Ehrman White & McAuliffe L.L.P., Los Angeles, CA, for Appellant Philip Morris USA Inc.

Andrew G. Schultz, Rodey, Dickason, Sloan, Akin & Robb, P.A., Albuquerque, NM, for Appellants R.J. Reynolds Tobacco Co., Brown & Williamson Tobacco Corp., and Lorillard Tobacco Co.

Thomas F. Cullen, Jr., William V. O’Reilly, Edwin L. Fountain, Jones, Day, Reavis & Pogue, Washington, DC, for Appellant R.J. Reynolds Tobacco Co.

Stephen R. Patton, Andrew R. McGaan, Barack S. Echols, Kirkland & Ellis, Chicago, IL, for Appellant Brown & Williamson Tobacco Corp.

Peter D. Isakoff, Weil, Gotshal & Manges, LLP, Washington, DC, Irving Scher, Weil, *231Gotshal & Manges, LLP, New York, NY, for Appellant Lorillard Tobacco Co.

Patricia G. Williams, Wiggins, Williams & Wiggins, P.C., Albuquerque, NM, for Appellants Liggett Group, Inc. and Brooke Group Holding, Inc.

OPINION

SUTIN, Judge.

{1} We have here first impression issues for New Mexico relating to certification of an indirect (consumer) purchaser antitrust (price-fixing) class action. Defendant cigarette manufacturers appeal from an order certifying a statewide class of all consumers who bought Defendants’ cigarettes during an approximate seven-year period.

{2} Plaintiffs allege Defendants violated the New Mexico Antitrust Act, NMSA 1978, §§ 57-1-1 to -17 (1979, as amended through 1987), by entering into a conspiracy to inflate them cigarette list price increases to wholesalers and distributors. Plaintiffs claim injury and damages from the pass-on of overcharges down the chain of distribution. We affirm, holding that under the requirements for class certification in Rule 1 — 023(B)(3) NMRA, the methodologies Plaintiffs presented to prove antitrust injury and damages are sufficient for class certification. Questions of law and fact common to the members of the class predominate over any questions affecting only individual members, and the class action is superior to other available methods for the fair and efficient adjudication of the controversy.

{3} As Background (¶¶4-34 infra), we generally discuss: (1) the Antitrust Act; (2) New Mexico’s class certification rule, Rule 1-023; followed by (3) and (4) Plaintiffs’ and Defendants’ proofs and positions; and (5) the district court’s determinations and Defendants’ points on appeal. In our Discussion, we: (1) set out our general approach to Rule 1-023 (¶¶ 35-39); (2) identify the standard of review (¶¶ 40); then, (3) we discuss Rule 1-023(B)(3)’s predominance standards for injury and damages; and (4) the superiority (manageability) standard (¶¶ 41-55); following which, (5) we analyze the cases supporting certification using classwide injury and damages through generalized proof (¶¶ 56-67); (6) we analyze the cases supporting denial of certification because of the need to prove individual injury and individualized damages (¶¶ 68-77); and (7) we analyze the Antitrust Act’s “damages actually sustained” language (¶¶ 78-83). We close the opinion with a summary and the result (¶¶ 84-98).

BACKGROUND

1. The Antitrust Act: Indirect-Purchaser Standing and Elements of Claim

{4} In Illinois Brick Co. v. Illinois, 431 U.S. 720, 728-29, 97 S.Ct. 2061, 52 L.Ed.2d 707 (1977), the United States Supreme Court held that indirect purchasers of a product from a manufacturer did not have standing to sue under the federal antitrust law for overcharges that were “passed on” to the indirect purchasers. The Court’s decision built on its previous ruling in Hanover Shoe, Inc. v. United Shoe Machinery Corp., 392 U.S. 481, 489, 88 S.Ct. 2224, 20 L.Ed.2d 1231 (1968), that antitrust defendants could not use the defense that overcharges were not absorbed by direct purchasers but were “passed on” to indirect purchasers, adopting the reasoning that to allow indirect purchaser lawsuits would unnecessarily complicate matters given “the economic uncertainties and complexities involved in proving pass-on.” Illinois Brick, 431 U.S. at 725 & n. 3, 97 S.Ct. 2061. In his dissenting opinion in Illinois Brick, Justice Brennan preferred to limit the Hanover Shoe rule to prohibiting the use of a pass-on defense, thus permitting indirect purchasers to prove overcharges. Illinois Brick, 431 U.S. at 753, 97 S.Ct. 2061 (Brennan, J., dissenting).

{5} In response to Illinois Brick, many states enacted provisions allowing indirect purchaser lawsuits under their antitrust law. The viability of these state provisions was confirmed when the United States Supreme Court limited Illinois Brick to construing federal antitrust policy and not “defining the interrelationship between the federal and state antitrust laws.” California v. ARC Am. Corp., 490 U.S. 93, 103, 105, 109 S.Ct. 1661, 104 L.Ed.2d 86 (1989). New Mexico’s *232indirect purchaser provision is contained in Section 57-l-3(A) of the Antitrust Act.

{6} Section 57-l-3(A) reads:

> All contracts and agreements in violation of Section 57-1-1 or 57-1-2 NMSA 1978 shall be void, and any person threatened with injury or injured in his business or property, directly or indirectly, by a violation of Section 57-1-1 or 57-1-2 NMSA 1978 may bring an action for appropriate injunctive relief, up to threefold the damages sustained and costs and reasonable attorneys’ fees. If the trier of fact finds that the facts so justify, damages may be awarded in an amount less than that requested, but not less than the damages actually sustained.

Commensurate with the grant of standing to indirect purchasers, the Antitrust Act allows defendants to assert as a defense that the plaintiffs “passed on all or any part of [an] overcharge ... to another purchaser or seller in [the distribution] chain.” § 57-l-3(C).

{7} To recover antitrust damages under federal law, a plaintiff must prove: (1) an antitrust violation; (2) that the violation caused damage to the plaintiffs business or property, characterized in antitrust cases as “injury,” or “fact of damage,” or “impact,” hereinafter referred to as “injury”; and (3) the amount of damages sustained. See Zenith Radio Corp. v. Hazeltine Research, Inc., 395 U.S. 100, 114 & n. 9, 89 S.Ct. 1562, 23 L.Ed.2d 129 (1969) (distinguishing the injury element establishing causation, which requires proof of “some” damage from a conspiracy, from the damages element that measures the extent of damage); Bell Atl. Corp. v. AT &T Corp., 339 F.3d 294, 302 & n. 12 (5th Cir.2003); Windham v. Am. Brands, Inc., 565 F.2d 59, 67 (4th Cir.1977) (involving allegations by tobacco growers of tobacco company price-fixing). “Antitrust injury, causation, and damages all are necessary parts of the proof because ‘Congress did not intend the antitrust laws to provide a remedy in damages for all injuries that might conceivably be traced to an antitrust violation.’ ” Concord Boat Corp. v. Brunswick Corp., 207 F.3d 1039, 1055 (8th Cir.2000) (quoting Hawaii v. Standard Oil Co., 405 U.S. 251, 262-63 n. 14, 92 S.Ct. 885, 31 L.Ed.2d 184 (1972)). We interpret the Antitrust Act in harmony with federal antitrust laws when, as here, we have no New Mexico authority on point to guide us. Griffin v. Guadalupe Med. Ctr., Inc., 1997-NMCA-012, ¶ 9, 123 N.M. 60, 933 P.2d 859. We determine, and the parties do not disagree, that the same three elements, i.e., a violation, causing injury, resulting in damages, must be proven under the Antitrust Act. See Ren v. Philip Morris Inc., No. 00-004035-CZ, 2002 WL 1839983, slip op. at *2 (Mich. Cir. Ct. June 11, 2002) (involving state antitrust allegations by consumers against manufacturers); Keating v. Philip Morris, Inc., 417 N.W.2d 132, 137 (Minn.Ct. App.1987) (involving state antitrust allegations by retailers against tobacco manufacturers).

2. Class Certification Rule

{8} Under Rule 1-023(A), to be certified as a class, New Mexico plaintiffs must satisfy the prerequisites commonly referred to as numerality, commonality, typicality, and adequacy. These prerequisites are not at issue in this appeal. The district court may only certify a class action for the recovery of damages if plaintiffs establish and the court finds these further prerequisites exist:

> [T]he questions of law or fact common to the members of the class predominate over any questions affecting only individual members, and that a class action is superi- or to other available methods for the fair and efficient adjudication of the controversy. The matters pertinent to the findings include:

> (a) the interest of members of the class in individually controlling the prosecution or defense of separate actions;

> (b) the extent and nature of any litigation concerning the controversy already commenced by or against members of the class;

> (c) the desirability or undesirability of concentrating the litigation of the claims in the particular forum;

> (d) the difficulties likely to be encountered in the management of a class action.

*233Rule 1 — 023(B)(3); Amchem Prods., Inc. v. Windsor, 521 U.S. 591, 614-16, 117 S.Ct. 2231, 138 L.Ed.2d 689 (1997).

{9} These Rule 1-023(B)(3) prerequisites are commonly referred to as the predominance and superiority requirements, see Am-chem Products, 521 U.S. at 615, 117 S.Ct. 2231 and they are directly at issue in this appeal. As we shall discuss, the predominance requirement brings into primary focus the plaintiffs’ proposed methods of proof at trial of the elements of an antitrust claim. And the primary focus of the superiority requirement is the suitability of the class action for management of the litigation. In the present case, the parties’ evidence focused on whether common factual issues predominated over individual ones and on difficulties likely to be encountered in the management of the litigation. Predominance of legal issues is not at issue.

3. Plaintiffs’ Proof and Positions

{10} Plaintiffs allege a seven-year, Antitrust Act price-fixing conspiracy among Defendants who controlled over ninety percent of the United States market for cigarettes.1 The primary evidence for class certification consisted of affidavits of an economist, Robert E. McCormick, Ph.D., Professor and Scholar, Department of Economics, Clemson University, together with materials and data he relied on. Dr. McCormick estimated that approximately 292,500 New Mexicans were damaged by approximately $132.3 to $216.3 million for purchasing the products during the time involved in this action. Relying on publicly available sales and market data, information as to pricing practices within the cigarette industry, and certain economic theories and statistical models, Dr. McCormick’s view was that a conspiracy to raise prices would necessarily produce a common, class-wide injury in the form of an embedded overcharge passed on through wholesalers, distributors, retailers, and jobbers to indirect purchasers.

{11} Dr. McCormick’s methodologies for determining classwide injury and damages included (1) a “benchmark price” analysis to determine the amount of overcharge, (2) a “tax incidence theory” to determine the amount of pass-on of overcharge to indirect purchasers, and (3) a “correlation analysis” to determine the fact of antitrust injury, that is, the facts of embedded overcharging and the pass-on of those overcharges to consumers. Dr. McCormick’s correlation analysis consisted of a statistical measurement of the average tendency of two sets of prices, the list price and the retail price, to move together over time.

{12} More particularly, Dr. McCormick analyzed the overall markets for cigarettes in the United States and in New Mexico, the market structure and distribution mechanism for cigarettes nationally and in New Mexico, manufacturer list prices nationally and in New Mexico, and retail scanner pricing data in New Mexico. As well, Dr. McCormick inquired into relevant supply and demand factors regarding cigarettes, and analyzed pricing policies of cigarette manufacturers nationally and analyzed certain economic literature. He further analyzed the rate of pass-on of manufacturer list prices to retail consumers and empirical retail data submitted by Defendants.

{13} In regard to classwide injury, Dr. McCormick concluded through his correlation analysis that Defendants’ list prices and corresponding retail prices moved together consistently. He further concluded that “no amount of shopping by any smoker in New Mexico could escape a conspiratorial overcharge.” According to Dr. McCormick’s analysis, ninety-eight percent of the retail prices of the brands sampled moved with the manufacturers’ prices, with a level of only five or less percent for error in the statistical conclusion. Thus, Plaintiffs assert, a conspiracy to raise prices will be felt by the consumer even if the retailer sells below its cost *234since, if the conspiratorial list price increase had not occurred, the retailer would have been selling below a lower list price.

{14} Based on Dr. McCormick’s analyses and opinions, Plaintiffs further argued below that once a price-fixing conspiracy is proven to have existed during the period alleged, every indirect purchaser of Defendants’ products during that period in New Mexico was injured because every one of them was deprived of access to a competitive market. According to Plaintiffs, deprivation of a competitive market is the real common issue, and the fact that some purchasers might have at one time paid less was not material. Purchasers do not make a one-time purchase, because, Plaintiffs argued, sooner or later, when enough packs are purchased, if this conspiracy is out there, the purchaser is going to be injured. Plaintiffs point out that Dr. McCormick had the benefit of extensive pricing data and economic analysis tools not available as late as the late 1980s. They contend that Dr. McCormick’s analyses satisfied their burden to show that common issues regarding antitrust injury predominated over individual issues regarding injury.

{15} Plaintiffs further contend that once they show wide-spread injury to the class on a classwide basis through common evidence, an estimate of aggregate damages is sufficient to carry Plaintiffs to certification even if they fail to transform their theories to real numbers. Plaintiffs argue that the concerns of complexity do not outweigh the importance of providing Plaintiffs an opportunity to try and prove damages resulting from the alleged conduct.

{16} More particularly, although nowhere specifically recited in Plaintiffs’ answer brief, in estimating aggregate damages, Dr. McCormick considered information that measured retail sales of cigarettes in New Mexico and overcharges at the manufacturer level adjusted by a rate of pass-on through the claim of distribution that takes into consideration the behavior of entities along that chain. Dr. McCormick used a “general formula” pursuant to which damages would be apportioned by multiplying the manufacturer’s sales by the overcharge percentage for direct purchasers, and then multiplying that product by the rate of pass-on of overcharge by retailers. Plaintiffs acknowledge that Dr. McCormick is estimating the amount of overcharge that was passed on to indirect purchasers. He arrived at a range of damages for indirect purchasers based on minimum overcharge and maximum overcharge amounts.

{17} After setting out his range of estimated damages, Dr. McCormick set out alternatives as to how he would apportion damages to individual class members. Again, not specifically discussed in Plaintiffs’ answer brief, one of Dr. McCormick’s alternatives was to award each class member with the damages to the average member of the class by dividing aggregate classwide damages by the number of class members. Another alternative was to collect smoking histories and behavior of individual class members during a claims process and, using the information in conjunction with per-pack overcharges already calculated, provide an estimate of actual damages to each individual class member. While acknowledging that individualized damages to indirect purchasers are concededly difficult to show, Plaintiffs assert that Defendants should not be free to violate antitrust laws by raising difficulty and uncertainty of proof.

4. Defendants’ Proof and Positions

{18} In opposition to class certification, Defendants presented an affidavit of their economic expert, Dr. Edward A. Snyder, an economist and Dean of the University of Chicago Graduate School of Business, along with various retailers’ affidavits, one Plaintiffs deposition, and other documentary evidence. Defendants’ evidence essentially consisted of details relating to the actual process of the distribution of cigarettes from Defendants to consumers, actual variations in retail pricing, and market and consumer behavior.

{19} During the alleged class period, Defendants sold about eighty different brands of cigarettes to about eight to twelve distributors and wholesalers in New Mexico who, in turn, sold to retailers. Retailers included convenience stores, cigarette outlets, mass merchandisers, supermarkets, grocery *235stores, drug stores, liquor stores, gas stations, and bars.

{20} Defendants did not set retail prices. Retailers independently determined their prices. Different retailers, and different types of retailers, pursued differing strategies with respect to cigarette pricing. For example, cigarette outlets generally offered lower prices than other retailers. Native American stores charged the lowest prices. Grocery stores typically charged higher prices than other retailers. In regard to strategies, some retailers used standardized pricing, while others varied their prices depending on location or local competition. Some retailers set their prices so that the prices ended in either “0” or “5,” and some ran cigarette promotions to build customer traffic.

{21} Consumers paid different prices for cigarettes depending upon, among other things, the brand, the retail outlet, and whether the purchaser availed himself or herself of any discounts or promotions. At some time during the class period, many members quit smoking, started smoking, or changed which, how often, and where they bought cigarettes. As an example, Defendants show that during the class period one Plaintiff, Beatrice Romero, bought Marlboros, a Philip Morris premium brand, at a grocery store where she shopped, five years later she switched to Misty, a Brown & Williamson discount brand, which she purchased at a discount cigarette store, and later she started smoking mostly “Native” brand cigarettes, a very low-priced brand that she purchased at a Native American store. Mrs. Romero had no records showing her purchases or the prices she paid during the class period.

{22} According to Defendants, retail price data collected from a sample of twenty-five stores between 1996 and 2000 showed that retail cigarette prices for the same brand varied as much as seventy-five percent from one New Mexico retail outlet to another. Variations in pricing resulted from discounts and promotions effective at both the wholesale level and the retail level. Different wholesalers paid different prices due to manufacturers’ promotional and incentive programs and discounts for prompt payment and assistance in promoting a particular brand. These wholesalers then charged different prices to retailers. Retailers sometimes switched wholesalers in order to obtain better prices.

{23} Defendants argued below that there were a variety of discounts and promotions offered by particular manufacturers directly to retailers, which changed from time to time and lowered retail prices. These included: (1) “buy downs,” where a manufacturer paid a retailer directly to reduce the retail price for a particular brand or for particular brands; (2) display agreements in which a manufacturer paid retailers for product placement and display space, payments the retailers could use to lower prices; and (3) “buy some get some” promotions, such as buy one get one free, which lowered the per-pack price paid by the consumer. The multitude of retail discounts and promotions in effect at any given time resulted in price variations from one geographic area to another, from one store to another, and even within a single store among competing brands.

{24} Pursuant to Defendants’ expert, cigarette prices in some stores did not increase in the weeks following manufacturer list price increases, indicating that some retailers absorbed those increases, and that others passed on some or all of the increase to consumers. For example, during the class period for which data was available, the data showed that six weeks after each of ten list price increases over forty percent of retailers had not raised prices on one or more major brands, and further showed instances in which nearly all retailers did not pass on list price increases for at least one major cigarette brand for two months. Some retailers did not increase prices in order to keep prices under certain pre-set levels. Others raised or lowered prices for reasons unrelated to manufacturer list price increases. Some retailers did not always increase their prices when list prices went up, or, alternatively, did not increase their prices at the same time or in the same amounts.

{25} Defendants assert on appeal that this “empirical data” shows that retail prices “did *236not increase in the wake of increases in list prices in any common or predictable fashion,” stating that Dr. Snyder studied the “actual cigarette prices charged by New Mexico retailers to determine whether those prices uniformly increased following increases in list prices” and that “[t]he data incontrovertibly show[ed] that they did not.” (Emphasis omitted.) Defendants further find it significant that Dr. Snyder’s analysis “showed that over 40% of New Mexico cigarette retailers had not raised prices on one or more major brands fully six weeks after each list price increase had taken effect.”

{26} Defendants attack Dr. McCormick’s conclusion of classwide injury as insufficient, arguing that only methodologies that would prove specific injury to individual class members were appropriate. They specifically attack Dr. McCormick’s correlation analysis on the ground that it said nothing about the specific amounts of the movements of list price and retail price, and, further, that because correlation analysis is only capable of measuring the average tendency of list and retail prices to move together over time and does not measure the amount by which retail prices changed, the correlation analysis could not detect the numerous instances where retailers did not pass on all or portions of list price increases. Thus, according to Defendants, the correlation analysis failed to demonstrate that any particular consumer was injured from a higher retail price at any specific point in time, thereby failing to prove injury to individual class members.

{27} Defendants attack Dr. McCormick’s damages methodology and calculations on the ground they are merely an estimate or average that would result in class members receiving damages awards different from the damages they actually sustained. Defendants argue that Dr. McCormick failed to show how the aggregate elasswide damages calculations could be reduced to an amount of damage actually suffered by any one consumer. Thus, Defendants argue, distribution of damages will result in class members recovering amounts different from the loss actually sustained.

{28} Defendants go on to assert that most class members do not have records that would show their purchases or the prices paid. In support of this assertion, Defendants cite Dr. McCormick’s deposition testimony in which he acknowledged that “[i]t’s not likely that [in a claims process] there are going to be substantial records associated with who bought from whom[,] what[,] when.” He further acknowledged that cigarettes are “a consumable product usually purchased in small quantities on a repetitive basis where records are not usually kept by consumers.” In addition, in acknowledging a distinction between stock and airline ticket purchaser cases as opposed to cigarette purchaser cases, Dr. McCormick stated that “cigarettes are different from — it’s not a product where detailed records pairing buyer and seller are recorded in a systematic fashion.” Defendants note cases, which we discuss later in this opinion, that have rejected class certification for class members who generally do not have or keep documented proof of their purchases. Plaintiffs are silent in regard to the documented — proof concern, apparently considering it immaterial at the class certification stage.

5. The District Court’s Determinations and Defendants’ Points on Appeal

{29} During argument on the issue of class certification, the district court indicated that it was difficult not to think that wholesale prices did not affect retail prices: “It’s always been my view that in general terms, at least, wholesale prices affect resale prices.” Further, the court’s questions showed concerns about requiring individuals to bring individual lawsuits because such suits did not constitute a practical avenue for individuals to obtain relief, and because of the likelihood of inconsistent results. The court also indicated during argument that there was little reason not to certify the class to at least determine whether a price-fixing conspiracy existed.

{30} The district court certified the class, determining first that Plaintiffs met their burden under Rule 1-023(A) of establishing the core requirements of commonality, numerosity, typicality, and adequacy. The court then moved to the issues of predominance and superiority under subpart (B)(3), *237first determining that common issues predominated as to the issue of whether a price-fixing conspiracy existed, and then determining that Plaintiffs satisfied the other requirements of subpart (B)(3) — those that are at issue in this appeal, namely, that common issues regarding classwide antitrust injury and damages predominate over issues regarding individual injury and the calculation of individual damages.

{31} The court delivered its opinion orally from the bench following argument, and that opinion was placed verbatim in a written order. The court began its discussion with the forecast that it would “look at Rule 23 quite broadly to effectuate ... legislative intent.” As to predominance on the issue of antitrust injury, virtually all the court stated was its conclusion that “the methodology that’s been proposed here meets what I view as the fairly low standard of plausibility.” The court also concluded that a plausible method had been presented for determination of aggregate damages, even though “[tjhat’s well below what must be proved at trial.” The court stated that, “once [injury] is shown, ... New Mexico law will not require the amount of damages to be proven at this stage[,]” and, therefore, “the issue of the amount of damages need not be addressed here at this stage.” However, the court added that, “[alternatively, I would conclude ... that if it is required that some reasonable method be addressed for purposes of the amount of damages, that has been established, and I base that on a fairly broad view of what our Courts will look for in terms of class certification.”

{32} The court then moved to superiority, concluding: “there is no other method of adjudication that can reasonably be brought to address the issue of whether a conspiracy existed. It is simply impractical to believe that any individual smoker could raise this as a lawsuit and pursue it [through] to verdict.” In the court’s view, this was “consistent with the legislative intent in adopting a statutory scheme which permits indirect purchasers to pursue actions for violation of the Antitrust Act,” an Act through which, the court felt, the Legislature “expressed a strong desire to discourage behavior which violates the Act” and intended “to provide for recovery, a remedy, to persons who have been affected, either directly or indirectly.” The court believed that the appellate courts would interpret the Antitrust Act broadly to implement that legislative intent through Rule 1-023.

{33} The court closed its order by offering its views that “the class action mechanism really is the perfect mechanism to determine the existence of a conspiracy in this type of a situation,” and that it is a “terrific mechanism ... for the Defendants ... to rebut ... the Plaintiffs’] contention that there was a conspiracy and to have a final resolution that’s binding not just on one consumer, but on all members of the class.” When the district court decided the certification motion in this case, we had not yet let it be known that we consider findings and conclusions to be very beneficial for review of class action cases. See Brooks v. Norwest Corp., 2004-NMCA-134, ¶ 36, 136 N.M. 599, 103 P.3d 39, cert. denied, No. 28,870, 136 N.M. 665, 103 P.3d 1097 (Dec. 7, 2004); Berry v. Fed. Kemper Life Assurance Co., 2004-NMCA-116, ¶ 19 n. 1, 136 N.M. 454, 99 P.3d 1166, cert. denied, No. 28, 850, 136 N.M. 515, 100 P.3d 672 (Sept. 17, 2004). We reiterate for future class certification cases that district courts should provide findings of fact and conclusions of law.

{34} Defendants raise three points of error on appeal, each of which focuses on the district court’s interpretation of the standards to use in application of the Rule 1-023(B)(3) requirements. First, Defendants contend that the certification standards the district court used in scrutinizing Plaintiffs’ methodologies were too lenient, and also that the court bypassed its duty to vigorously analyze Plaintiffs’ methodologies and failed to require any showing by Plaintiffs of how, through common proof, they would show individual injury and individualized damages at trial. Second, Defendants contend that the district court erred in not addressing damages or, alternatively, in accepting Plaintiffs’ theory of aggregating damages to the class as a whole despite the inability to determine actual damages for individual class members, thereby relieving class members of having to prove any actual damages. As part of this conten*238tion, Defendants assert that the court failed to require a damages methodology by which Plaintiffs would adhere to the Antitrust Act’s proof requirement of “damages actually sustained.” Third, Defendants contend that the district court erred in its interpretation and application of the superiority requirement by entirely ignoring manageability and approving the class solely because the court believed that individual lawsuits would be impractical.

DISCUSSION

1. General Approach to Rule 1-023

{35} Rule 1 — 023(B)(3) is essentially identical to its federal counterpart, Rule 23(b) of the Federal Rules of Civil Procedure. We may look to federal law for guidance in determining the appropriate legal standards to apply under these rules. See Benavidez v. Benavidez, 99 N.M. 535, 539, 660 P.2d 1017, 1021 (1983) (stating that it was appropriate for the district court to look to federal law construing Rule 1-060(B) NMRA); Eastham v. Pub. Employees Ret. Ass’n Bd., 89 N.M. 399, 402-03, 553 P.2d 679, 682-83 (1976) (relying on federal interpretations of Fed.R.Civ.P. 23); Ridley v. First Nat’l Bank in Albuquerque, 87 N.M. 184, 185-86, 531 P.2d 607, 608-09 (Ct.App.1974) (same). Nonetheless, we must be analytically careful when looking at federal antitrust class action cases because they do not involve actions by indirect (consumer) purchasers. See Execu-Tech Bus. Sys., Inc. v. Appleton Papers Inc., 743 So.2d 19, 22 (Fla.Dist.Ct. App.1999) (stating that the presumption of injury in an anti-competitive market “should not arise in indirect purchaser cases due to the evidentiary complexities and uncertainties noted in Illinois Brick ”); Ren, 2002 WL 1839983, at *5 (stating that “[t]he presumption engaged in by some courts regarding injury to direct purchasers is not available in an indirect purchaser case”).

{36} We enter into our analysis of the issues before us recognizing that class actions play a significant role in obtaining remedies for small claim holders against defendants who violate antitrust laws. See Amchem Prods., 521 U.S. at 617, 117 S.Ct. 2231 (indicating that the class action process solves the problem of lack of incentive to seek redress for an antitrust violation by aggregating small potential recoveries into a matter worth pursuing, including an attorney’s labor). Rule 1-023 is a device to save court and party resources and promote litigation economy by litigating common questions of law and fact at one time. Gen. Tel. Co. v. Falcon, 457 U.S. 147, 155, 161, 102 S.Ct. 2364, 72 L.Ed.2d 740 (1982) (majority opinion and Burger, C.J., concurring and dissenting). The predominance and superiority requirements seek to assure avenues exist through which treatment as a class action can achieve economy and promote uniformity of decision. Amchem Prods., 521 U.S. at 615, 117 S.Ct. 2231; see Fed.R.Civ.P. 23(b)(3) advisory comm, notes (concluding that the additional requirements sought to cover cases “in which a class action would achieve economies of time, effort, and expense, and promote uniformity of decision as to persons similarly situated, without sacrificing procedural fairness or bringing about other undesirable results”). Rule 1-023 is a remedial procedural device, and we will interpret it liberally. See In re NASDAQ Market-Makers Antitrust Litig., 169 F.R.D. 493, 504 (S.D.N.Y.1996) [hereinafter In re NASDAQ ]; In re Sugar Indus. Antitrust Litig., 73 F.R.D. 322, 357-58 (E.D.Pa.1976) [hereinafter In re Sugar ]. We also recognize that a dominant policy behind the class action procedure is the “vindication of the rights of groups of people who individually would be without effective strength to bring their opponents into court at all.” Amchem Prods., 521 U.S. at 617, 117 S.Ct. 2231 (internal quotation marks and citation omitted). Through class actions, injured persons with small claims are given an avenue to “overcome the problem that small recoveries do not provide the incentive for any individual to bring a solo action prosecuting his or her rights.” Id. (internal quotation marks and citation omitted).

{37} Yet we are aware that Rule 1-023 was not “intended to permit a redress for all wrongs committed under the antitrust laws.” City of Philadelphia v. Am. Oil Co., 53 F.R.D. 45, 73 (D.N.J.1971) (acknowledging the plaintiffs’ argument of class action superiority on the ground the defendants should *239not be permitted to profit by their conspiracy, and the unfortunate consequences of not certifying the class, but determining nevertheless that the basic requirement of manageability was not met). Furthermore, although Section 57-l-3(A) confers standing to New Mexico indirect purchasers to bring a civil action for damages, we see no indication that the Legislature intended the Antitrust Act to single out indirect purchasers for any different or more favorable class action treatment than was intended for other persons seeking relief from a violation of the Act. See Peridot, Inc. v. Kimberly-Clark Corp., No. MC 98-012686, 2000 WL 673933, at *2 (Minn. Dist.Ct. Feb.7, 2000) (holding that state indirect purchaser provision makes “no special allowance for such suits to be brought as class actions-suits filed under the antitrust chapter as class actions still must meet all requirements for class certification”); Melnick v. Microsoft Corp., Nos. CV-99-709, CV-99-752, 2001 WL 1012261, at *6 n. 7 (Me.Super.Ct. Aug. 24, 2001) (“The enactment of [Maine’s indirect purchaser statute] does not change the plaintiffs’ burden of proof on a motion for class certification.”); Derzon v. Appleton Papers, Inc., No. 96-CV-3678, 1998 WL 1031504, at *4 (Wis.Cir.Ct. July 7, 1998) (“[S]imply because Wisconsin sought to provide a remedy to indirect purchasers ... does not signify that such a remedy is necessarily appropriate for a class actionf.]”).

{38} While recognizing the useful purpose of Rule 1-023, we are mindful that courts must nevertheless conduct a rigorous analysis into whether the prerequisites of the rule are met before certifying a class. Gen. Tel. Co., 457 U.S. at 161, 102 S.Ct. 2364; Bell Atl. Corp. v. AT & T Corp., 339 F.3d 294, 301 (5th Cir.2003); In re Cardizem CD Antitrust Litig., 200 F.R.D. 297, 303 (E.D.Mich.2001) [hereinafter In re Cardizem]. The party seeking certification has the burden of showing that each prerequisite of Rule 1-023 is met. Amchem Prods., 521 U.S. at 614, 117 S.Ct. 2231; Bell Atl. Corp., 339 F.3d at 301; Windham v. Am. Brands, Inc., 565 F.2d 59, 64 n. 6 (4th Cir.1977). The district court’s rigorous analysis often “involves considerations that are enmeshed in the factual and legal issues comprising the plaintiffs cause of action.” Coopers & Lybrand v. Livesay, 437 U.S. 463, 469, 98 S.Ct. 2454, 57 L.Ed.2d 351 (1978) (internal quotation marks, citation, and emphasis omitted). Thus, the court may “probe behind the pleadings before coming to rest on the certification question.” Gen. Tel. Co., 457 U.S. at 160, 102 S.Ct. 2364. In fact, we have held that “it is essential for the court to understand the substantive law, proof elements of, and defenses to the asserted cause of action to properly assess whether the certification criteria are met.” Brooks, 2004-NMCA-134, ¶ 31, 136 N.M. 599, 103 P.3d 39.

{39} A class may not be certified unless the district court is satisfied that the Rule 1 — 023(B)(3) requirements are actually satisfied; and the court may not simply presume conformance with Rule 1-023. See Gen. Tel Co., 457 U.S. at 160, 102 S.Ct. 2364; Szabo v. Bridgeport Machs., Inc., 249 F.3d 672, 677 (7th Cir.2001) (rejecting “the ‘across-the-board’ rule jettisoned by Gen. Tel. Co.” and holding that district courts were required to find actual, not presumed, conformance with Rule 23(b)); Sample v. Monsanto Co., 218 F.R.D. 644, 650 (E.D.Mo.2003) (rejecting the plaintiffs’ assertion of predominance of common issues as to injury based on expert testimony where the plaintiffs presumed elasswide injury without any consideration whether a price-fixing conspiracy or markets “actually operated in ... a manner so as to justify that presumption”); Execu-Tech Bus. Sys., 743 So.2d at 22 (refusing in indirect purchaser cases to apply a presumption of anti-competitive market injury). We have noted that the abundant literature regarding class action litigation “indicates that the courts have grown more cautious over the years about the class action vehicle.” Berry, 2004-NMCA-116, ¶34, 136 N.M. 454, 99 P.3d 1166. Although the wisdom or form of class certification can be reconsidered after a class has been certified, see Rule 1-023(C)(1), courts should be careful not to postpone rigorous analysis into satisfaction of the prerequisites until after certification. See Berry, 2004-NMCA-116, ¶¶ 33-37, 136 N.M. 454, 99 P.3d 1166.

*2402. Standard of Review

{40} We review the grant of class certification for abuse of discretion as set out in Berry, 2004-NMCA-116, ¶¶ 25-26, 136 N.M. 454, 99 P.3d 1166.

3. The Predominance Standards for Injury and Damages

{41} “The Rule 23(b)(3) predominance inquiry tests whether proposed classes are sufficiently cohesive to warrant adjudication by representation.” Amchem Prods., 521 U.S. at 623, 117 S.Ct. 2231. “Stated broadly, Plaintiffs’ burden under [Rule] 23(b)(3) is to establish that common or ‘generalized proof will predominate at trial with respect to the essential elements of their antitrust claim.” In re Polypropylene Carpet Antitrust Litig., 996 F.Supp. 18, 22 (N.D.Ga.1997) (order) [hereinafter In re Polypropylene Carpet ]. The validity of the methodologies that pass certification scrutiny will be determined when they are tested at trial. See In re NASDAQ, 169 F.R.D. at 521.

{42} In the present case, no predominance issue exists as to whether Defendants violated the Antitrust Act. Defendants concede that, in price-fixing cases brought by indirect purchasers, the question whether there was a conspiracy is typically a common one. As to antitrust injury, “[t]o proceed as a class, Plaintiffs must show they plan to use common evidence that reveals impact as to each member of the proposed class without resorting to lengthy individualized examinations.” In re Polypropylene Carpet, 996 F.Supp. at 22. As to antitrust damages, Plaintiffs “must show they will compute damages through the use of common proof.” Id. at 29 (internal quotation marks and citation omitted).

{43} It is not difficult to stage the debate on the overriding predominance issue in the present case. On one side is whether the methodologies advanced by Plaintiffs at the certification stage to prove injury and damages at trial must, as Defendants assert, be sufficient to establish at trial specific individual injury and individualized damages with respect to each class member. The other side is whether those methodologies need only, as Plaintiffs assert, constitute a “threshold showing” from which injury and damages can reasonably be inferred on a classwide basis, leaving for trial the sufficiency of those generalized methodologies to satisfy Plaintiffs’ burden of proof. Plaintiffs contend the burden does not include having to show a specific individual injury and a specific amount of individualized damages with respect to each individual class member.

{44} In Plaintiffs’ view, their methodologies are “plausible,” “viable,” and “sound” methods for demonstrating classwide injury and damages. The substantive quality of the injury methodology that meets the threshold necessary for certification has been characterized in various ways, including “ ‘logically probative of a loss attributable’ to the alleged conspiracy.” In re Domestic Air Transp. Antitrust Litig., 137 F.R.D. 677, 692 (N.D.Ga.1991) [hereinafter In re Domestic Airl (quoting Bogosian v. Gulf Oil Corp., 561 F.2d 434, 454 (3d Cir.1977)). Plaintiffs must “have demonstrated at least a ‘colorable method’ of proving [common injury] at trial.” In re Visa Check, 280 F.3d at 135 (internal quotation marks and citation omitted) (alteration in original). Damages methodologies have been held sufficient to meet the required threshold and permit class certification if they are “not so insubstantial and illusory as to amount to no method at all.” In re Potash Antitrust Litig., 159 F.R.D. 682, 697 (D.Minn.1995) [hereinafter In re Potash ]; In re Catfish Antitrust Litig., 826 F.Supp. 1019, 1042 (N.D.Miss.1993) [hereinafter In re Catfish] (stating that “[t]he court’s role at the class certification stage in assessing the proposed methods of proving damages is quite limited,” namely, inquiring “whether or not the proposed methods are so insubstantial that they amount to no method at all”).

{45} In Defendants’ view, the court applied too low a standard, i.e., a mere plausibility standard that falls below what courts require for certification of a class action and what amounts to no method at all. As we discuss more fully later in this opinion, courts disagree on whether a class can be certified based on a generalized methodology from *241which classwide injury may be inferred, as opposed to requiring the plaintiffs to show a common method to prove specific individual injury. Furthermore, differences exist in case law as to the predominance standard on the question of antitrust damages.

{46} The difficult task of determining whether to certify a class stems not only from the different legal approaches taken in various courts as to how relaxed the predominance standards may be, but also in no small part from the use of economic experts. Drs. McCormick and Snyder submitted extensive affidavits with their analyses and supporting materials and data. These experts appear to be qualified and competent, and each, at least in part, based their opinions on some empirical data.

{47} Dr. McCormick’s analyses and opinions lend themselves to the approach advanced by Plaintiffs that individualized proof of injury and damages is not required beyond the use of general methodologies from which common injury can reasonably be inferred and only aggregate damages need be proven at trial. Dr. Snyder’s analyses and opinions lend themselves to the approach advanced by Defendants that the real world facts regarding the cigarette industry, as opposed to economic theory based on no or insufficient real world facts, show that when injury and damages are seen on an individualized basis the results are varied and Dr. McCormick’s theories and methodologies cannot reasonably predict injury or an individual purchaser’s damages. Each expert attacks the other’s analyses and conclusions.

{48} The complexity of the issues when economic theorists take over the subject matter has caused courts to avoid attempting to resolve the “familiar ‘battle of the experts’ ” at the class certification stage, particularly as to the issue of predominance as it relates to injury. In re Potash, 159 F.R.D. at 694, 697; In re Visa Check, 280 F.3d at 135 (holding a district court at the class certification stage “may not weigh conflicting expert evidence or engage in statistical dueling of experts” (internal quotation marks and citation omitted)). Rather, these cases hold that it is for the jury to determine whether Plaintiffs’ expert is correct in his assessment of injury, and all that Plaintiffs must present at the certification stage is a threshold showing that the proof at trial will be sufficiently generalized to make the class action approach worth the effort. In re Potash, 159 F.R.D. at 697; see also In re Catfish, 826 F.Supp. at 1042 (“Whether or not [the expert] is correct in his assessment of common impact/injury is for the trier of fact to decide at the proper time.”); In re Domestic Air, 137 F.R.D. at 692 (stating the “[t]he weight to be given [the expert’s] testimony and its effect is for the fact finder in assessing the merits of plaintiffs’ claims at a later date”).

{49} Despite the need in many cases to postpone critical analysis of an expert’s methodologies, in assessing whether the certification requirements are met and in fulfilling its rigorous-analysis duty, the district court “must undertake an analysis of the issues and the nature of required proof at trial to determine whether the matters in dispute and the nature of plaintiffs’ proofs are principally individual in nature or are susceptible of common proof equally applicable to all class members.” In re Cardizem, 200 F.R.D. at 303; In re Potash, 159 F.R.D. at 693 (stating the court must evaluate the substantive allegations of the complaint); In re Catfish, 826 F.Supp. at 1039 (concluding that the suitability for certification of an antitrust class action is a fact-sensitive process); Execu-Tech Bus. Sys., 743 So.2d at 20-21 (stating the focus of the evidentiary hearing on predominance and manageability is “whether [plaintiffs] had developed or could develop a methodology to show through generalized, class-wide proof that the price fixing impacted each individual class member”); Nissan Motor Co. v. Fry, 21 S.W.3d 573, 592 (Tex.App.2000) (understanding of the claims, defenses, relevant facts, and applicable substantive law is essential to the predominance inquiry).

{50} There exist no bright lines to determine whether common questions predominate. In re Potash, 159 F.R.D. at 693. “There is no precise test governing the determination of whether common questions predominate over individual claims. Rather, a pragmatic assessment of the entire action and all of the issues is involved in making the *242determination.” Howe v. Microsoft Corp., 656 N.W.2d 285, 289 (N.D.2003). Nevertheless, while rigorous factual analysis is necessary and can be critical to the predominance determination, there is more than a kernel of truth in the view that in some complex cases “[d]ecisions as to whether class action status should be allowed seem to rest, more than many other judicial determinations, on judicial philosophy, rather than on precedent or statutory language.” Id. at 288. It has been said that “[wjhen there is a question as to whether certification is appropriate, the Court should give the benefit of the doubt to approving the class.” In re Workers’ Comp., 130 F.R.D. 99,103 (D.Minn.1990).

4. The Superiority (Manageability) Standard

{51} Rule 1-023(B)(3) requires class members to demonstrate that “a class action is superior to other available methods for the fair and efficient adjudication of the controversy.” The rule sets out in four subparagraphs “[t]he matters pertinent to the findings,” the fourth and only relevant one for this case being “the difficulties likely to be encountered in the management of a class action.” Rule l-023(B)(3)(d). Predominance and superiority are often peas in the same pod when management of a class action is at issue. See Elliott v. ITT Corp., 150 F.R.D. 569, 577 (N.D.Ill.1992) (“[Resolution of the predominance question tends to focus on the form trial on the issues would take, with consideration of whether the action would be manageable.”). That is, the management issue is relevant to both predominance and superiority. Brooks, 2004-NMCA-134, ¶ 33, 136 N.M. 599, 103 P.3d 39; Berry, 2004-NMCA-116, ¶ 96, 136 N.M. 454, 99 P.3d 1166 (stating the manageability issue is “intertwined with the issue of predominance”). Still, Plaintiffs must distinctly prove both of the elements, predominance and superiority. Brooks, 2004-NMCA-134, ¶30, 136 N.M. 599, 103 P.3d 39. The Rule 23(b)(3)(D) factor, “[cjommonly referred to as ‘manageability,’ ... encompasses the whole range of practical problems that may render the class action format inappropriate for a particular suit.” Eisen v. Carlisle & Jacquelin, 417 U.S. 156, 164, 94 S.Ct. 2140, 40 L.Ed.2d 732 (1974).

{52} There appears to be little question and few cases appear to disagree as a general proposition that, from a manageability perspective, a class action is a superior procedure to handle thousands of class members’ small claims when common issues of fact and law predominate and common methods of proving those claims exist. See, e.g., In re NASDAQ, 169 F.R.D. at 527-29 (discussing reasons why the class action is superior to other methods of adjudication because it can be the most efficient, convenient, and fan-method to resolve a controversy); In re Sugar, 73 F.R.D. at 358 (“It is manifest that the maintenance of class actions is superior to the institution of a multitude of individual lawsuits.”). But that general statement begs questions that are at the heart of the present case, namely, the extent, if any, to which the ultimate proof at trial must consist of evidence showing specific, individual injury and specific, individualized damages; whether factual development requires individual evidentiary adjudications for each of the class members due to significant, material factual differences; and whether management of the factual adjudications would be so extensive or difficult as to be intolerable or cause insurmountable problems in the management of the action. See In re NASDAQ, 169 F.R.D. at 528 (stating, in regard to manageability, that the court “foresees no insurmountable problems in the management of this lawsuit”). As we discuss later in this opinion, there exist cases, including price-fixing eases, in which such manageability concerns have been thought to overshadow the beneficial use of a class action to adjudicate small claims.

{53} In addition to management concerns arising from injury and damages determinations, management of the action can pose significant problems if members of the class are not identifiable. See In re Phenylpropanolamine (PPA) Prods. Liab. Litig., 214 F.R.D. 614, 617 (W.D.Wash.2003) (order) [hereinafter In re Phenylpropanolamine ] (“If the members of the class are not identifiable, [management] of the action may pose insurmountable problems.” (internal quota*243tion marks and citation omitted)). Cases involving indirect consumer purchasers have been concerned about the absence of written proof of purchase and vagaries of memory. See id. at 617-18 & n. 5 (discussing various cases addressing lack of documentary or physical proof of purchase).

> Because the vast majority of putative class members are unlikely to possess proof of purchase, and given the purportedly immense size of this class, the individualized inquiries surrounding class identification would be prodigious and would defy the court’s ability to effectively and efficiently manage the litigation.

Id. at 619-20; City of Philadelphia, 53 F.R.D. at 71-72 (determining potential class of consumers who “by and large ... made cash purchases [of gasoline] at many different stations, at many different times, at many different prices,” where few, if any records would exist on which to base an award, to be unmanageable, in part, because “[i]t would be almost impossible ... to compile a list of the members of this class”); see also Sias v. Edge Communications, Inc., 8 P.3d 182, 185 (Okla.Civ.App.2000) (upholding finding that identification of class of prepaid calling card purchasers would be very difficult and class adjudication unduly burdensome where class size would be very substantial, defendant produced several different designs of calling cards, and purchasers generally discarded cards after use). The use of sworn affidavits is not necessarily an appropriate substitute for an individualized hearing. See In re Phenylpropanolamine, 214 F.R.D. at 618-19; see also Sias, 8 P.3d at 186 (stating that the record failed to indicate that any class members could be identified through reasonable efforts since potential class members “likely do not possess any proof of their qualification as class members because the [calling] cards are intended to be discarded”).

{54} All said, the most important focus and most salient question to ask in terms of manageability should remain that based on the language of Rule 1-023(B)(3), namely, even with significant management concerns, is the class action superior to whatever other methods are available for the fair and efficient administration of the controversy? “ ‘Manageability problems are significant only if they create a situation that is less fair and efficient than other available techniques.’ ” In re NASDAQ, 169 F.R.D. at 528 (quoting In re Sugar, 73 F.R.D. at 358). There appears to be no want of cases holding, as did the court in In re Catfish, that “individual questions of damages are often encountered in antitrust actions, and they are rarely a barrier to certification.” 826 F.Supp. at 1043. In antitrust price-fixing eases, the general mindset, at least in the federal courts, appears to be that refusal to certify on the sole ground that the action is not manageable is disfavored and should be the exception rather than the rule. See, e.g., In re Visa Check, 280 F.3d at 140; In re Workers’ Comp., 130 F.R.D. at 110 (stating that “dismissal for management reasons is never favored”). But see In re Hotel Tel. Charges, 500 F.2d 86, 90, 92 (9th Cir.1974) (“[T]he desirability of allowing small claimants a forum to recover for largescale antitrust violations does not eclipse the problem of unmanageability.”); Barreras Ruiz v. Am. Tobacco Co., 180 F.R.D. 194, 199 (D.P.R. 1998) (stating that although it is difficult to ignore the reality that a class action is the only viable remedy for the plaintiffs given the enormous burden of pursuing independent litigation, it is not a sufficient reason to “headlong plunge into an unmanageable and interminable litigation process”).

{55} The foregoing general discussion in Parts 3 (¶¶ 41-50) and 4 (¶¶ 51-54) of this opinion of predominance and superiority standards leads us into a more detailed discussion of the cases relied on by the parties to support their respective positions. The cases do not by any means provide a definitive path for resolution of the issues in the present case. We first discuss federal and state antitrust cases supporting certification based on proof of classwide injury and damages through generalized methodologies in Part 5 (¶¶ 56-67). We next discuss federal and state cases that do not support certification based on such proof and methodologies in Part 6 (¶¶ 68-77). Following these discussions, we address Defendants’ position that the Antitrust Act itself requires proof of each *244class member’s actual damages in Part 7 (¶¶ 78-83).

5. Cases Supporting Classwide Injury and Damages Through Generalized Proof

{56} For their methodologies to pass certification scrutiny, Plaintiffs rely for the most part on several often-cited federal direct purchaser cases favoring classwide proof under the Rule 23(b)(3) proof requirements. See, e.g., In re Cardizem, 200 F.R.D. at 321; In re NASDAQ, 169 F.R.D. at 520-24; In re Potash, 159 F.R.D. at 697. We discuss these three not insignificant, mainstay cases in order to see the rationales for Plaintiffs’ approach.

{57} In re Cardizem was an antitrust action by direct purchasers of the drug Cardizem CD from the drug manufacturers to recover higher, artificially inflated prices for the drug purchases. 200 F.R.D. at 300-01. The court’s analysis centered on the relationship between manufacturers and direct purchasers (wholesalers, chain pharmacies, food and drug stores, hospitals, climes, long-term care facilities, mail order pharmacies, and governmental agencies) who could likely prove documented purchases. Id. at 300 n. 1, 323, 326.

{58} The court in In re Cardizem determined that the formal, standardized, structured, established, and predictable criteria and framework involved in pricing, discounts, rebates, and individual negotiations supplied sufficient common evidence “to prove that all class members suffered at least some injury.” Id. at 318-20. As to quantum of damages, the court determined that the plaintiffs “proffered several reasonable damage methodologies for measuring class-wide damages on an aggregate basis and for calculating damages for individual class members.” Id. at 322. After a detailed analysis of the methodologies, the court appears to have been convinced that the plaintiffs’ experts could devise for use at trial a likely method to determine damages using actual market data as well as forecasts and models, and based on a “market [that] is in fact highly structured with prices set according to pre-set criteria enumerated in company pricing manuals.” Id. at 324-25.

{59} However, the court in In re Cardizem did not view the measure of damages in direct purchaser-antitrust overcharge cases to be actual harm, but, rather, “a surrogate-the full overcharge.” Id. at 316 (internal quotation marks and citation omitted). Further, the court did not require “an exactness on a direct purchaser’s overcharge damage award,” in terms of requiring direct purchasers to net out their damages by proving that part of the overcharge was passed on to consumers. Id. In re Cardizem also rejected the concern that an overcharge-damage theory might result in a windfall to the plaintiffs. Id. at 317. The court agreed with the view that in assigning a full right to recover to direct purchasers, Illinois Brick established a policy that “ ‘[t]he standard of individual net harm yields to a standard of net social harm in order to accommodate the limitations of the legal system.’ ” In re Cardizem, 200 F.R.D. at 316 (quoting Roger D. Blair & William H. Page, “Speculative” Antitrust Damages, 70 Wash. L.Rev. 423, 434 (1995)). Finally, the court in In re Cardizem had no difficulty rejecting the defendants’ arguments that the class action was not a superi- or method to adjudicate the controversy. Id. at 325.

{60} In re NASDAQ was an action by individual buyers of securities and the State of Louisiana in its parens patriae capacity against market-makers, alleging an unlawful price-fixing scheme by the market-makers. 169 F.R.D. at 498-99. The court certified the class under Rule 23(b)(3) based on (1) the plaintiffs’ intention “to prove the effectiveness of Defendants’ conspiracy by using-economic theory, academic studies, data sources, and statistical techniques — all designed to demonstrate that Nasdaq spreads were actually widened as a result of the conspiracy — that are common to the entire class”; and (2) methodologies by which the plaintiffs proposed “to prove the existence and measure of damages,” including comparing several different “spreads (and resulting revenues)” as to actual securities traded, and comparing profits from spreads, methodologies “widely accepted [as] means of measur*245ing damages in antitrust cases.” In re NASDAQ, 169 F.R.D. at 520-21. Further, the court cited In re Potash in noting that it had judicial methods available to resolve individual damages issues, and further noted that “[cjourts have allowed the plaintiffs to establish the measure of damages at trial, and this measure is then applied to the individual transactions (typically in a second[,] bifurcated proceeding following trial on the common issues).” In re NASDAQ, 169 F.R.D. at 522. Aggregate damages of the class as a whole was thought to be “susceptible to determination in a single trial along with the issue of liability,” id. at 524, and the court determined that damages could be determined on a classwide, or aggregate basis, “where the computerized records of the particular industry, supplemented by claims forms, provide a means to distribute damages to injured class members in the amount of their respective damages.” Id. at 526. On the issue of superiority, the court foresaw “no insurmountable problems in the management of th[e] lawsuit.” Id. at 528.

{61} In re Potash involved an action by wholesaler direct purchasers for conspiracy to fix the wholesale price of potash. 159 F.R.D. at 687-88. In regard to injury, the court employed a presumption that price fixing impacts “all purchasers of a price-fixed product in a conspiratorially affected market” and ultimately determined that the clash of expert analyses and opinions on such impact was to be resolved at trial. Id. at 695-97. The plaintiffs, the court held, need only make “a threshold showing that what proof they will offer will be sufficiently generalized in nature that ... the class action will provide a tremendous savings of time and effort.” Id. at 697 (internal quotation marks and citation omitted) (alteration in original).

{62} As to amount of damages, the court in In re Potash adopted what it called a “relaxed standard,” which was that “the Court’s inquiry [into predominance as to damages] is limited to whether or not the proposed methods are so insubstantial as to amount to no method at all.” Id. The court frankly stated that this “relaxed standard flowfed] from the equitable notion that the wrongdoer should not be able to profit by insistence on an unattainable standard of proof.” Id. Although recognizing that, typically, the amount of damages in antitrust actions largely involves individualized questions, the court in In re Potash nevertheless determined that this did not preclude certification. Id. The plaintiffs’ expert’s opinion was based on three methods of computing overcharge that, according to the expert, permitted damages suffered by class members to be determined “with a substantial degree of precision, by means of a formula.” Id. In the court’s view, these methods were not “so insubstantial as to amount to no method at all.” Id. The court set out the “various judicial methods ... available [to the court] to resolve individual damage issues without precluding class certification,” including among others, “appointing special masters or magistrates to preside over individual damage proceedings,” and “using the defendants’ transactional records to compute individual damages.” Id. at 698. In regard to manageability, the court held that the class action was “the most efficient and convenient method to resolve th[e] controversy.” Id. at 699.

{63} Plaintiffs also cite cases supporting the view that variations in damages amounts in antitrust actions will not defeat certification on predominance or superiority grounds once they show conspiracy and injury. This position is exemplified by the following language in In re Workers’ Compensation:

> Individual questions of damages are often a problem encountered in an antitrust action and are rarely a barrier to certification.

> Separate mini-trials, a special master, later stratification of the class, or a magistrate may be available to resolve such issues. In this action[,] plaintiffs must demonstrate a conspiracy and its impact, not necessarily on an individual basis; those questions predominate over any secondary and individual questions of damages.

> ... If the plaintiffs’ claims are substantiated, a question as to which the Court presently has no opinion, the class action mechanism is clearly the most efficient means of resolving the many claims which *246may be asserted. The Court is confident that stated classes or subclasses will make the case comfortably — if not easily — manageable. If the case were not handled as a class, thousands of small claims would be either brought or unjustly abandoned. The first possibility would be a flood of cases, the second would involve individual claims abandoned because of cost.

> The Court is mindful that dismissal for management reasons is never favored. The vehicle of class action is meant to permit plaintiffs with small claims and little money to pursue a claim otherwise unavailable. A contrary rule would essentially preclude class treatment whenever separate issues had to be tried.

130 F.R.D. at 110 (internal quotation marks and citations omitted); see also In re Catfish, 826 F.Supp. at 1042-43 (stating relaxed standard of whether “the proposed methods are so insubstantial that they amount to no method at all,” and “it is generally recognized that some relaxation of the plaintiffs burden of proving damages is tolerated once an antitrust violation and resulting damages have been established” and stating further that the determination of damages amounts, although individualized, are rarely a barrier to certification); In re Polypropylene Carpet, 996 F.Supp. at 29-30 (holding sufficient for class certification the plaintiffs’ intention to use such techniques as (1) multiplying “the amount of any price increase estimated by [a] regression analysis by the number of products purchased by the class members,” or (2) multiplying “the estimated price increase by the total dollar purchases made by the class members”).

{64} We also note several federal decisions Plaintiffs cite specifically in support of their position that class damages may be proven in the aggregate. See Bigelow v. RKO Radio Pictures, Inc., 327 U.S. 251, 66 S.Ct. 574, 90 L.Ed. 652 (1946); Brown v. Pro Football, Inc., 146 F.R.D. 1 (D.D.C.1992); In re Brand Name Prescription Drugs Antitrust Litig., Nos. 94 C897, MDL 997, 1994 WL 663590 (N.D.Ill. Nov.18, 1994) (mem.); In re Alcoholic Beverages Litig., 95 F.R.D. 321 (E.D.N.Y.1982). Plaintiffs also draw on Newberg on Class Actions, which contains an entire section devoted to “Proof and Distribution of Aggregate Class Damages,” see 3 Alba Conte & Herbert B. Newberg, Newberg on Class Actions, ch. 10 (4th ed.2002), and whose overall disposition (based solely on federal case law) tends to be supportive of not precluding certification or trial if only aggregate damages is proven with a percapita or average formula for distribution of the damages award. See, e.g., Newberg, supra, §§ 10:2 to 10:7,10:12.

{65} Plaintiffs further rely on several state court Microsoft antitrust cases permitting class certification based on a showing of classwide injury and a lenient standard in regard to damages. See Coordination Proceedings Special Title Rule 1550(b) Microsoft I-V Cases, No. 4106, slip op. (Cal. Super Ct. Aug. 29, 2000); Gordon v. Microsoft Corp., No. 00-5994, 2001 WL 366432, at *13 (D.Minn. Mar. 30, 2001); In re N.M. Indirect Purchasers Microsoft Corp. Antitrust Litig., No. D-0101-CV-2000-1697, slip op. at 5 (N.M.Dist.Ct. Oct. 2, 2002); Howe, 656 N.W.2d at 298; In re S.D. Microsoft Antitrust Litig., 657 N.W.2d 668, 677-79 (S.D. 2003). But see Melnick v. Microsoft Corp., Nos. CV-99-709, CV-99-752, 2001 WL 1012261, at *16 (Me.Super.Ct. Aug. 24, 2001) (holding plaintiffs’ methodologies to be too general to constitute a means to prove damages on a classwide basis); A & M Supply Co. v. Microsoft Corp., 252 Mich.App. 580, 654 N.W.2d 572, 598, 600 (2002) (reading state law to require proof of actual damages and rejecting figures that were “general in nature” to prove the actual damages the class members sustained).

{66} Plaintiffs also see two Tennessee cases as particularly important. They are Meighan v. U.S. Sprint Communications Co., 924 S.W.2d 632 (Tenn.1996), and Sherwood v. Microsoft Corp., No. 99C-3562, 2004 WL 2468846 (Cir.Ct.Tenn. Dec. 20, 2002) (mem. and order). Meighan is a trespass and taking action for damages for cables installed over land, in which the court states that trial courts may determine an aggregate amount for the class as a whole, and then to either divide the award among class members, or allow each class member to individually prove his or her claim against the entire *247judgment. 924 S.W.2d at 635, 638. In certifying an antitrust class action, the court in Sherwood turned primarily to Tennessee law and Meighan and rejected A & M Supply Co. and Melnick which required individualized damages determinations. Sherwood, at 5-6,18, 21.

{67} Plaintiffs assert, based on the foregoing eases, among others, that they needed only to come forward with their generalized threshold showings by which they intend to prove classwide injury and damages. It is Dr. McCormick’s theoretical analyses and aggregation of damages from which, according to Plaintiffs, it can be reasonably anticipated that common, classwide injury to most, if not all class members, and classwide damages, can be proven. Plaintiffs assert that the superiority requirement has been satisfied based not only on the fact that it would be impractical for the individual consumers to pursue these claims, but that this class action is superior to individual actions within the meaning of Rule 1-023 in regard to the fair and efficient adjudication of claims.

6. Cases Supporting the Need to Prove Individual Injury and Individualized Damages Through Common Proof

{68} The generalized, and as the district court in the present case characterized it, “plausible,” methodology approach of Plaintiffs has not been adopted in several cases, some of which are quite similar to the present case. Several indirect tobacco purchaser, price-fixing cases fall in this group of cases. For example, in a cigarette retailer action in Minnesota and in cases parallel to the present case brought by consumer purchasers in Minnesota and Michigan in which the plaintiffs presented the same experts’ theories as those in the present ease, the courts denied certification. See Ren v. Philip Morris Inc., No. 00-004035-CZ, 2002 WL 1839983, slip op. at *18 (Mich. Cir. Ct. June 11, 2002) (indirect'purchaser); Ludke v. Philip Morris Cos., No. MC 00-1954, 2001 WL 1673791, at *4 (Minn.Dist.Ct. Nov.21, 2001) (mem.) (indirect purchaser); Keating v. Philip Morris, Inc., 417 N.W.2d 132,138 (Minn.Ct.App.1987) (retailer). But see Smith v. Phillip Morris Cos., No. 00-CV-26 (Kan.Dist.Ct. Nov. 15, 2001) (journal entry of decision) (certifying class of indirect purchasers of cigarettes, stating that a single price-fixing conspiracy “affects all of the proposed class members equally,” and that the plaintiffs were bound only to show that “damage was inflicted upon the class by the price fixing conspiracy” and to “present a logical, reasonable method for determining the damages of the entire class”). We discuss these cases at the outset.

{69} Ren was a price-fixing antitrust case brought by indirect consumer purchasers of cigarettes. In regard to antitrust injury, Ren determined that the indirect purchasers could not establish injury “through the use of the presumptions or inferences that might otherwise prevail in direct purchaser federal antitrust cases.” 2002 WL 1839983, at *5. Ren quoted with approval the following analysis in Melnick, in which the court determined that:

> the presumption engaged in by some courts regarding injury to direct purchasers is not available in an indirect purchaser ease:

> Because indirect purchasers must demonstrate that any overcharges resulting from the illegal action of the defendants have been passed on to them, an entirely separate level of evidence and proof is injected into litigation of indirect purchaser claims. Proof of antitrust conspiracy may logically lead to a conclusion that the subject of the conspiracy, the retailers, have each been harmed. No such conclusion logically follows without specific proof tracing that overcharge on to consumers.

Melnick, 2001 WL 1012261, at *7 (internal quotation marks and citation omitted). The court in Ren nevertheless concluded that Dr. McCormick’s correlation analysis was “a method based on common proofs from which it could be concluded that there was class wide injury or impact” and that the plaintiffs thereby met their predominance burden as to injury. Ren, 2002 WL 1839983, at **11-12.

{70} On the other hand, in regard to damages, the court in Ren determined that Dr. McCormick’s mere aggregation of damages showing classwide damages, with no indication of “the quantum of damages to any one *248individual,” id. at *14, was insufficient to meet the plaintiffs’ predominance burden as to damages. Id. at *16. The court expressly rejected Dr. McCormick’s proposed aggregate class damages approach, finding it inadequate as a matter of law. Id. at *17.

{71} More particularly, the court in Ren held that Dr. McCormick’s proposal to simply divide estimated aggregate elasswide damages among class members “amount[ed] to ‘no method’ at all since it necessarily permits an award of something other than actual damages.” Id. Without a method for proving each individual class member’s actual damages through a formula or other common proof, the plaintiffs failed to show that common issues would predominate. Id. at **16-17. The court found it unlikely that “any sort of ascertainment of individual damages can be made under some systematic or formulaic basis that avoids the necessity of individualized proofs regarding the brands of cigarettes purchased, and the particular retail prices paid,” id. at *16, and determined that, upon resolution of any common issues, the court would still “be faced with potentially an indefinite number of mini-trials to ascertain a class member’s actual damages,” and further determined that these considerations made a class action unmanageable. Id. at *17-18.

{72} In Ludke, the court determined that “it would be nearly impossible to determine what amount any particular consumer was damaged by the conspiracy or whether the particular consumer was damaged at all.” 2001 WL 1673791, at *3 (emphasis omitted). In particular, the court in Ludke noted that because class members “do not generally keep receipts or any other proof of purchase ... [and] may well not know how many cigarettes they consume,” certifying the class “would be an invitation for fraud.” Id. at *3. Further, Ludke quoted with approval the following from Windham v. Am. Brands, Inc., 565 F.2d 59, 68 (4th Cir.1977):

> Thus in cases where the fact of injury and damage breaks down in what may be characterized as “virtually a mechanical task,” “capable of mathematical or formula calculation,” the existence of individualized claims for damages seems to offer no barrier to class certification on grounds of manageability. On the other hand, where the issue of damages and impact does not lend itself to such a mechanical calculation, but “requires separate mini-trial[s],” of an overwhelming large number of individual claims, courts have found that the “staggering problems of logistics” thus created “make the damage aspect of case predominate,” and render the case unmanageable as a class action.

Ludke, 2001 WL 1673791, at *2 (alteration in original). Ludke also turned to the denial of class certification to cigarette retailers in Keating stating: “Clearly, if the [Keating ] Court found that an individualized claims process for a class composed of cigarette retailers would be daunting, an individualized claims process would be a nightmare to administer for the hundreds of thousands of claims likely to be generated by a class action composed of end-users of cigarettes.” Ludke, 2001 WL 1673791, at *4. The court in Ludke was troubled “not so much ... by the calculation of aggregate damages, as ... by the impossible task of dispersing these aggregate damages to individual claimants.” Id. at *3.

{73} Keating was a price-fixing antitrust ease brought by cigarette retailers. 417 N.W.2d at 133-34. The court affirmed the denial of certification of a statewide class of cigarette retailers. Id. at 137-38. The court held that evidence of the distribution and pricing of cigarettes required proof of injury and damages on an individualized basis. Id. at 134, 137. More particularly, in discussing the wholesale cigarette market, the court was concerned that each retailer would have to establish the price paid on each purchase under circumstances of widespread wholesaler use of nonuniform, as well as non-cash discounts. Id. at 137. The court noted the trial court’s determination that “[a]ny determination of fact or amount of individual damage will require thousands of factual examinations done on a retailer by retailer basis, and a transaction by transaction basis. The class action would quickly degenerate into thousands and thousands of individual trials.” Id. (internal quotation marks omitted). The court determined that the trial court did not *249abuse its discretion in denying certification on both predominance and superiority (specifically, manageability) grounds. Id. at 136-38; see also Windham, 565 F.2d at 66 (involving tobacco growers’ claims of a price-fixing conspiracy by cigarette manufacturers, in which the court stated, “[w]hile [an antitrust] case may present a common question of violation, the issues of injury and damage remain the critical issues in such a case and are always strictly individualized”).

{74} State courts in pharmaceutical cases have arrived at similar results. In Wood v. Abbott Laboratories, No. 96-512561-CZ, 1997 WL 824019 (Mich.Cir.Ct. Sept.ll, 1997) (unpublished opinion and order), a pharmaceutical price-fixing case, the court denied certification to indirect consumer purchasers of drugs. Citing Michigan’s statute permitting an indirect purchaser to recover only actual damages, the court held that the plaintiffs failed to “provide a method for calculating each class member’s actual damages and thus calculation of injury and actual damages would require examination of the drugs each class member purchased ... rendering the class unmanageable.” Id. at *2. As to the plaintiffs’ expert’s methodologies and opinion, and rejecting those theories that provided “at best ... a method for calculating the existence of injury and damage on a class-wide basis,” the court continued:

> [the expert’s] theories do not provide a method for calculating each class member’s actual damages and thus calculation of injury and actual damages would require examination of the drugs each class member purchased from which retailer, the discounts applicable to each retailer for each drug at the time of purchase, and other relevant factors, resulting in thousands of mini-trials and rendering the class unmanageable. For this reason, other jurisdictions to consider this issue have denied certification to the class of indirect purchasers of brand name prescription drugs.

Id. The court found “that individual questions of fact as to both injury and damages predominate over the one theory common to the class, that being the existence of the alleged conspiracy, and that these individual questions render the case unmanageable as a class action.” Id. at *3. Several other Abbot Laboratories state court cases have denied class certification. See McCarter v. Abbott Labs., Inc., No. CV 91-050, at 7, 1993 WL 13011463 (Ala.Cir.Ct. Apr. 9, 1993) (order) (determining individual questions in regard to each purchase of infant formula were varied fact questions that had to be answered separately to determine injury and damages); Karofsky v. Abbott Labs., No. CV-95-1009, at 31 (Me.Super.Ct. Oct. 16, 1997) (decision and order) (denying class certification and concluding “that there are so many individual issues [of] retail pricing strategies, market forces, profit margins, geography, individual drugs, and circumstances of purchase, that the presentation of plaintiffs’ claims as a class action would simply be unmanageable”); Kerr v. Abbott Labs., No. 96-002837, 1997 WL 314419, at **2, 4 (Minn.Dist.Ct. Feb.19, 1997) (mem.) (“Tracing individualized transactions through the complex distribution network of the brand-name prescription drug industry would clearly cause individual questions of fact to predominate over questions common to the proposed class.”); Fischenich v. Abbott Labs., Inc., MC 94-6868, at 8-9 (Minn.Dist.Ct. May 26, 1995) (order) (“It is also unlikely that proposed class members will have any records indicating where the formula was purchased, when it was purchased, and how much was purchased. This leads to the question of how damages will be verified unless defendants are given an opportunity to cross-examine the individual purchasers.”); see also In re Methionine Antitrust Litig., 204 F.R.D. 161, 163 (N.D.Cal. 2001) (holding, in action involving state antitrust law, that “the amount of damage suffered by each class member will not be determined on a class-wide basis[,]” but that “[c]ourts have uniformly held ... that the existence of such an individual question is not a sufficient reason for denying certification”).

{75} In the federal realm, In re Phenylpropanolamine involved a proposed class of consumers seeking refunds for purchases of over-the-counter medications. 214 F.R.D. at 618. The court concluded that the likely lack of class member proof of purchases, as evidenced by the testimony of several named plaintiffs, made the case unmanageable. Id. *250at 619-20 & n. 8. The court’s major concern was verification of purchase, stating:

> Unlike cases involving substantial purchases for which proof of purchase would be readily available or prescription medication verifiable by medical and pharmacy records, the process of simply identifying who rightfully belongs within the proposed class would entail a host of mini-trials____ Because the vast majority of putative class members are unlikely to possess proof of purchase, and given the purportedly immense size of this class, the individualized inquiries surrounding class identification would be prodigious and would defy the court’s ability to effectively and efficiently manage the litigation.

Id. at 619-20. The court further noted that adopting an aggregate approach to damages “would not serve to lesson [sic] the manageability problems plaguing the proposed class” because the court still would face “the daunting task of determining who could claim those damages in the first place.” Id. at 620.

{76} Turning away from cigarette and drug-related cases, other significant federal decisions have similarly denied certification. In Bell Atlantic Corp. v. AT & T Corp., the plaintiffs sought to certify a class alleging antitrust (monopoly) violations and proposed to prove damages using a formula to calculate damages based on averages developed from national labor cost data. 339 F.3d 294, 304 (5th Cir.2003). As to injury, the court stated that “where [injury] cannot be established for every class member through proof common to the class, the need to establish antitrust liability for individual class members defeats Rule 23(b)(3) predominance.” Id. at 302. Further, in noting that the federal courts have “rejected claims where the plaintiffs proposed method of calculating damages failed to reasonably approximate actual economic losses,” the court upheld the district court’s denial of certification, holding the plaintiffs’ averaging technique was not an “adequate approximation of any single class member’s damages, let alone a just and reasonable estimate of the damages of every class member.” Id. at 303, 304, 308.

{77} The court in Bell Atlantic Corp. was critical of the plaintiffs’ methodology, in that “[njumerous factors that would have affected the amount of damages, if any, suffered by any given class member ... [were] not accounted for in the proposed formula.” Id. at 304. The court indicated that “[c]lass treatment ... may not be suitable where the calculation of damages is not susceptible to a mathematical or formulaic calculation, or where the formula by which the parties propose to calculate individual damages is clearly inadequate.” Id. at 307; see also Sample v. Monsanto Co., 218 F.R.D. 644, 650-51 (E.D.Mo.2003) (refusing to presume class-wide impact without any consideration of whether the markets or the alleged conspiracy at issue actually operated in a manner to justify that presumption, and determining that accepting a generalized theory would be an improper dereliction of its duty to rigorously analyze the proposed class certification proofs against the record facts); Ralston v. Volkswagenwerk, A.G., 61 F.R.D. 427, 432-33 (W.D.Mo.1973) (“[Damages] should not be based on speculation or a system of averaging. Rather, the compensation due each individual member of the class must necessarily reflect the damages actually suffered by that party.”); City of Philadelphia v. Am. Oil Co., 53 F.R.D. 45, 48-49, 72 (D.N.J.1971) (stating, in connection with its concern about cash purchases of gasoline at many different stations, at many different times, and at many different prices, that, “no matter how easy it is to establish damages on a class level, if it is extremely difficult or almost impossible to distribute these sums to their rightful recipients, the class is unmanageable”); and see A & M Supply, 654 N.W.2d at 603 (a state court decision stating “a plaintiffs burden [is] to articulat[e] a method or formula by which a court could determine that the defendant’s conduct caused each member of the proposed class actual damages”).

7. The Antitrust Act’s “Damages Actually Sustained” Language

{78} Defendants assert that the Antitrust Act’s express use of the words “damages actually sustained” in Section 57-l-3(A) helps answer the dispute as to what must be shown at the class certification stage. After *251permitting indirect purchasers who are injured to sue for up to threefold “the damages sustained,” Section 57-l-3(A) permits the finder of fact, where the facts justify it, to award damages “in an amount less than that requested, but not less than the damages actually sustained.” § 57-l-3(A). Thus, the finder of fact can award damages above those “actually sustained,” but cannot drop below “damages actually sustained.” Id.

{79} Based on this language, Defendants argue that permitting an aggregate damages award at trial, with no proof of the individualized damages of class members, would be contrary to the clear wording of the statute. Defendants point to Ren, in which actual damages language in the state antitrust statute caused the court to reject a distribution of an aggregate award unless each class member received a damages award representing only his or her actual loss. See Ren, 2002 WL 1839983, at **2, 17 (construing a Michigan statute stating that a person injured directly or indirectly may bring an action for actual damages sustained in relation to whether the court could use a fluid recovery fund to avoid problems with ascertaining individual assessment of damages and denying resorting to a fluid recovery fund theory, and holding that “[i]t necessarily follows ... that a defendant is only hable to a plaintiff for the ‘actual damages’ sustained by that plaintiff as the result of a violation of the [Michigan statute]”).

{80} Plaintiffs, by brief footnote only, argue that the wording in Section 57-l-3(A) should be read only in the context that, while “exemplary” damages can be reduced if there exists evidence of lack of willfulness, such justification cannot also be used to reduce any damages actually sustained. Plaintiffs also argue that the Antitrust Act is meant to be a “ ‘full consideration’ statute, entitling the injured person to recovery of the full amount paid, which obviates the need to individually calculate the amount of overcharge in each transaction.”

{81} We doubt Section 57-l-3(A), enacted in substantially its present form in 1891, was worded with class certification predominance and superiority requirements in mind, or, more particularly, with any focus on whether an aggregate recovery would suffice instead of requiring each class member to prove his or her actual, individualized damages, in order to recover under the Antitrust Act. The phrase “damages actually sustained” appears to us to have been inserted in order to set a floor for damages below which the trier of fact cannot go in awarding damages. For these reasons, although the wording of the statute does reflect a legislative requirement that the trier of fact assess actual damages sustained, we are unpersuaded that these words in the statute were specifically intended to set a particular standard under Rule 1-023(B)(3) for class certification or for determining whether aggregate damages would be a proper award, and whether distribution of a lump sum award on a per-capita or average basis would be proper, in a class action. We therefore determine that Defendants’ view of the Antitrust Act does not control the question whether, if a class is certified under Rule 1-023(B)(3), individualized damages need not be proven at trial.

{82} Defendants mingle with their Antitrust Act actual damages argument, namely, that an aggregate damages recovery would violate New Mexico’s enabling act, NMSA 1978, § 38-1-1 (A) (1966). This section provides that rules of procedure promulgated by the New Mexico Supreme Court “shall not abridge, enlarge or modify the substantive rights of any litigant.” Id. Defendants argue that this act forbids what the district court did, namely, permit Plaintiffs to pursue an aggregate damages remedy when the Antitrust Act does not permit it. See Amchem Prods., Inc. v. Windsor, 521 U.S. 591, 592, 117 S.Ct. 2231, 138 L.Ed.2d 689 (1997) (stating that the court must be “mindful that Rule 23’s requirements must be interpreted in keeping with ... the [federal] Rules Enabling Act[]”); Windham, 565 F.2d at 66 (stating that generalized classwide proof of damages would contravene the mandate of the Rules Enabling Act, 28 U.S.C. § 2072(b), that Rules of Civil Procedure “shall not abridge, enlarge or modify any substantive right” (internal quotation marks omitted)); see also Bell Atl. Corp., 339 F.3d at 302 (stating antitrust proof requirements cannot be “lessened by reason of being raised in the *252context of a class action”); Alabama v. Blue Bird Body Co., 573 F.2d 309, 327 (5th Cir. 1978) (recognizing that a class action procedure cannot “in any way alter the substantive proof required to prove up a claim for relief’). Plaintiffs’ response is that Rule 1-023 is a procedural rule and “[procedural provisions do not ‘abridge, enlarge or modify the substantive rights of any litigant,’” relying on In re Daniel H., 2003-NMCA-063, ¶ 18, 133 N.M. 630, 68 P.3d 176.

{83} Rule 1-023 does not, as written, abridge a defendant’s substantive rights under the Antitrust Act. Defendants’ concern is the district court’s interpretation of Rule 1-023, not the mere existence of the rule. Defendants argue that by interpreting the rule to allow an award of aggregate and not individualized damages the court lessens and alters the substantive proof of actual damages sustained required under the Antitrust Act. We are unpersuaded. To the extent Section 57-l-3(A) requires the assessment of actual damages sustained by reason of a violation of the Antitrust Act, it does not necessarily follow that an aggregate award cannot consist of actual damages, or that the distribution made to each individual class member from a lump sum award consisting of actual damages must correspond to each class member’s actual loss.

SUMMARY AND RESULT

1. Summary of Positions

{84} That common issues predominate over individual issues as to antitrust conspiracy is not in question in this appeal. It is clear that the means for proving a conspiracy will be common to the class. See, e.g., Ren, 2002 WL 1839983, at *3 (determining that proof of whether manufacturers conspired to fix prices “will not differ between class members”).

{85} As to antitrust injury and amount of damages, the ends of the spectrum are plainly presented. Plaintiffs present generalized methodologies to prove classwide injury and damages. They present no common proof by which, at trial, they expect to prove the individual injury to and the individualized damages of each class member. The question is whether to open the class certification door under these circumstances. To do so, assuming Plaintiffs prove a price-fixing conspiracy, would allow each class member who purportedly is able to show a purchase of cigarettes during the class period to recover damages without Plaintiffs having to specifically prove the class member’s actual payment of an overcharge and without having to specifically prove the amount of each class member’s individual loss for which the member is entitled to damages.

{86} Plaintiffs’ injury-related evidence consists of methodologies from which, according to Plaintiffs, it can reasonably be inferred that a very high percentage of those purchasing cigarettes were necessarily injured by the overcharges. Plaintiffs’ damages-related evidence builds on their injury-related evidence but goes no further than estimating the aggregate damages, dividing that number by the number of class members, and distributing the lump sum under an averaging formula. There exists no indication in Plaintiffs’ brief that they intend any individual adjudications as to what overcharge any individual class member actually paid, or as to the particular amount any individual class member was actually damaged, even if that amount need only be reasonably estimated.

{87} The bottom line rationale for Plaintiffs is that the intent of the Legislature in enacting the indirect purchaser provision in the Antitrust Act together with the underlying remedial purpose of Rule 1-023 is that indirect consumer purchasers with small claims be able, through the class action procedure, to recover damages through class-wide proof of injury and damages, without Plaintiffs having to prove each class member’s individual injury or individualized damages. To deny certification on either predominance or superiority grounds would effectively deny the class members, consisting of indirect consumer purchasers, access to the court for recovery of damages, leaving class members to fare for themselves in separate, independent, and uneconomical actions to establish small claims. Equally important, Plaintiffs contend that manufacturers who violate the Antitrust Act should not be permitted to escape liability through a rigid reading of Rule 1-023(B)(3). Thus, according to Plaintiffs, Defendants should be *253subject to a lump sum2 restitution award, to be divided under an averaging formula.

{88} Defendants contend Plaintiffs’ approach denudes Rule 1 — 023(B)(3) to the point that the predominance and superiority requirements of the rule are meaningless. They point out that the vast majority of prospective class members likely have no record of when or where they purchased cigarettes, what brands they purchased, or how much they paid for the cigarettes. They feel due caution requires a court to have a deep concern that the process can be fraught with poor memory or, worse, with fraud. They also argue that any overcharge must be ascertained and can only be ascertained by factual development of actual pricing from an individual manufacturer through an individual retailer on any given day or week. Defendants assert that neither the Antitrust Act, nor Rule 1 — 023(B)(3), requires or even contemplates class recovery without common proof predominating to establish each class member’s individual injury and individualized damages. Defendants also assert that the manageability problems necessarily arising because individual injury and individualized damages must be proven should make it clear a class action is not a superior process for adjudication of the claims.

{89} The tensions between these views are not insignificant. A class action is permissible if, among other prerequisites, joinder is impracticable due to numerosity. See Rule 1 — 023(A)(1). A beneficial and primary purpose of the Rule 1-023 procedure is to address class members’ claims in one proceeding where joinder outside of the class action setting is impracticable. If a class action were unavailable, the many small claimants will not file an action, not have the funds to prosecute the action, or not benefit financially when costs are set against recovery. Yet a tension is created by the circumstance of the impracticability of individualized proof as to each of the thousands of class members’ injuries and losses. There no doubt also exist instances in which the class action process may not be superior because of severe manageability problems in regard to the adjudication of such claims. This case magnifies the tension between competing views about class recovery when proof of individualized damages is impracticable and, if required, can present substantial manageability problems. The tug between proof requirements is heightened by the many and varied decisions condoning, as well as condemning, aggregate or generalized proofs. Cases vary in context, facts, and philosophy. To a large extent, differences seem to reflect different attitudes as well as degrees of the fears of courts as to “the unmanageability and untested limits of class actions under the amended Rule 23.” Newberg, supra, § 10:5, at 484.

2. Result: Antitrust Injury

{90} In regard to antitrust injury, we hold that Plaintiffs have satisfied the predominance standard under Rule 1-023(B)(3). Plaintiffs have presented common, generalized, logically probative methodologies to prove antitrust injury to class members, methodologies that are at the very least superficially acceptable to meet the predominance threshold. We are in line with the thinking, for example, in Ren, where the court agreed that Dr. McCormick’s analyses relating to injury were sufficient for class certification purposes. See Ren, 2002 WL 1839983, at **2, 4-9. In Ren, the plaintiffs attempted to use common proof, specifically including economic theory and correlation analysis, to show injury. Id. at *6. The court determined that the correlation analysis which showed that the overcharge was passed on to the consumer ninety-six percent of the time was sufficient to show injury. Id. at **11-12. The court noted that at the class certification stage, the plaintiffs were not required to show that every single member of the class was injured where the plaintiffs could show widespread injury to the class. Id.

*254{91} In the present case, where Plaintiffs’ expert has shown through methodologies, including correlation analysis, that the overcharge, or at least some portion of it, was passed on to the consumer ninety-eight percent of the time, we conclude that the district court did not abuse its discretion in determining that Plaintiffs met their burden. This conclusion is in accord with the well-analyzed price-fixing cases and makes good sense when addressing, injury in an anti-competitive market in which it is likely that a large number of consumers, such as people who purchase cigarettes on an ongoing basis, over time will be affected by price fixing. “As a rule of thumb, a price fixing antitrust conspiracy model is generally regarded as well suited for class treatment.” In re Catfish Antitrust Litig., 826 F.Supp. 1019, 1039 (N.D.Miss.1993). Although the foregoing adage comes from a direct purchaser/price-fixing case, we think it adaptable as well, to indirect purchaser/price-fixing cases.

{92} Although a tie-leasing and not a price-fixing case, what the court in Bogosian v. Gulf Oil Corp., 561 F.2d 434 (3d Cir.1977), stated in regard to injury is apropos:

> There is absolutely no requirement that the loss be personal or unique to plaintiff, so long as the plaintiff has suffered loss in his business or property, for as we have noted, this second aspect of fact of damage is not concerned with any policy of limiting liability. Thus, when an antitrust violation impacts upon a class of persons who do have standing, there is no reason in doctrine why proof of the impact cannot be made on a common basis so long as the common proof adequately demonstrates some damage to each individual.

Id. at 454. In regard to a conspiracy resulting in “increase[d] prices to a class of plaintiffs beyond the prices which would obtain in a competitive regime,” the court in Bogosian further stated that “an individual plaintiff could prove fact of damage simply by proving that the free market prices would be lower than the prices paid and that he made some purchases at the higher price.” Id. at 455.

{93} We caution, however, that it is one thing at the class certification stage to allow certification based on what appear to be logi-

cally probative general methodologies, and another thing to prove at trial that a high percentage of indirect purchasers were injured by their purchases of products in an anti-competitive market. Once past certification, Defendants will still be permitted to attack Plaintiffs’ methodologies at trial as to scientific reliability and as to sufficiency of proof of antitrust injury. Cf. Concord Boat Corp. v. Brunswick Corp., 207 F.3d 1039, 1056-57 (8th Cir.2000) (determining expert’s “model to construct a hypothetical market which was not grounded in the economic reality of the ... market,” which “ignored inconvenient evidence,” and which failed to account for market events that were unrelated to any anti-competitive conduct, to lack sufficient foundation to prove damages, resulting in conclusions that were mere speculation, and to require reversal because admission of the opinion affected the defendants’ substantial rights). The following cautionary guideline highlights the point:

> [T]he fact that a case is proceeding as a class action does not in any way alter the substantive proof required to prove up a claim for relief. The holding is also a recognition that “impact” is a question unique to each particular plaintiff and one that must be proved with certainty. That does not mean of course that cases do not exist wherein this requirement of certainty cannot be established by some sort of classwide proof. But it does mean that cases do exist wherein generalized proof of impact would be improper.

Blue Bird Body Co., 573 F.2d at 327 (footnote omitted). Blue Bird Body Co. also noted the “great importance” the Fifth Circuit Court- of Appeals placed “on the ‘impact’ element of an antitrust cause of action.” Id.

3. Result: Antitrust Damages and Manageability

{94} While issues relating to proof of purchase are ever-present in this case, we agree with what appears to have been the district court’s view, namely, that certification in this case hinges on the sufficiency for certification of Plaintiffs’ classwide injury methodologies and not on Plaintiffs’ damages methodologies. If there exists classwide injury, it fol*255lows that class members who were injured suffered some damages. In our view, this logical step provides the common proof necessary to overcome Defendants’ predominance objections as to damages. See In re NASDAQ Market-Makers Antitrust Litig., 169 F.R.D. 493, 523, 524 (S.D.N.Y.1996) (indicating agreement with the view that “the predominance requirement of Rule 23(b)(3) is satisfied with respect to proof of injury, even though individualized inquiry may be necessary on the quantum of damages,” and further that individual damages questions are not a barrier to certification but are to be reserved “to be litigated in a subsequent set of proceedings”); In re Domestic Air Transp. Antitrust Litig., 137 F.R.D. 677, 691-92 (N.D.Ga.1991) (noting that once price fixing and injury have been established, a plaintiff “need only introduce evidence sufficient for a jury to estimate the amount of damages” through a “formulaic approach[] to calculation of damages [that] permit[s] the calculation of a minimum overcharge applicable to all members of the class,” and determining that the plaintiffs’ methodologies that evidenced common injury also permitted formulaic calculation of damages).3

{95} Although fairly formidable, Defendants’ case law does not persuade us that in price-fixing cases we must ignore the methodological elasswide injury umbrella that paves the way for a logically probative general methodology to prove damages. Nor do Defendants’ cases and arguments persuade us that, as a matter of law, an aggregate damages methodology with a certain amount of individualized proof cannot produce a fair result if, in fact, a price-fixing conspiracy has been proven.4 The following language from Bigelow v. RKO Radio Pictures, Inc., 327 U.S. 251, 66 S.Ct. 574, 90 L.Ed. 652 (1946), has not yet gone out of style:

> [T]he jury may make a just and reasonable estimate of the damage based on relevant data, and render its verdict accordingly. In such circumstances juries are allowed to act on probable and inferential as well as (upon) direct and positive proof. Any other rule would enable the wrongdoer to profit by his wrongdoing at the expense of his victim. It would be an inducement to make wrongdoing so effective and complete in every case as to preclude any recovery, by rendering the measure of damages uncertain.

> Failure to apply it would mean that the more grievous the wrong done, the less likelihood there would be of a recovery.

> The most elementary conceptions of justice and public policy require that the wrongdoer shall bear the risk of the uncertainty which his own wrong has created.

Id. at 264-65, 66 S.Ct. 574 (internal quotation marks and citations omitted). Even the dissent in Bigelow established the “difficulty in ascertaining the exact amount of damage [as] a risk properly cast upon the wrong-doing defendant” in federal antitrust law. Id. at 267-68, 66 S.Ct. 574 (Frankfurter, J., dissenting). “Antitrust plaintiffs have a limited burden with respect to showing that individual damages issues do not predominate.” In re Potash Antitrust Litig., 159 F.R.D. 682, 697 (D.Minn.1995). “[I]t is generally recognized that some relaxation of the plaintiffs burden of proving damages is tolerated once an antitrust violation and resulting damages have been established.” In re Catfish, 826 F.Supp. at 1042. There is a willingness to accept some measure of uncertainty, not only because of the difficulty in ascertaining the damages, but also because of the “simple, equitable notion that the wrongdoer should not be allowed to profit by an insistence upon *256an unattainable standard of proof.” Id. at 1042-43.

{96} It seems obvious, though, that proof of damages will necessitate at the very least some acceptable proof of purchase of the product in question during the time in question, and may well necessitate more proof than that. Certainly, some minimum amount of individualized proof will be at the very least required for class members to receive any amount of damages. However, while manageability issues will likely arise under any proof of damages, we do not see problems of such an intolerable or insurmountable character to cause us to pause at this stage and prevent certification on manageability grounds. As several price-fixing cases have indicated, it must be the rare case where certification should be precluded where the predominance requirements have been satisfied.

{97} It is not without significance that the district court in the present case obviously feels comfortable proceeding to the merits, leaving it with the court and the jury to wrestle with issues of claims and proof. Determination of manageability is usually left to the discretion of the district court. See Windham, 565 F.2d at 65; Link v. Mercedes-Benz of N. Am., Inc., 550 F.2d 860, 864 (3d Cir.1977). As long as neither we nor the district court sees virtually insurmountable obstacles lying in wait as to such proof, we see no reason to hold that the district court abused its discretion in certifying the class over Defendants’ superiority objections and cases. See In re NASDAQ, 169 F.R.D. at 528-29 (stating that the court did not foresee any insurmountable problem in the management of the lawsuit; that “[c]ourts are generally loath to deny class certification based on speculative problems with case management”; and determining that class action treatment was superior to any other available method for the “fair” and “efficient” adjudication of the case); see also In re Catfish, 826 F.Supp. at 1043 (“The difficulties or challenges which may face the court in the damages phase of this litigation, should it proceed that far, are frail obstacles to certification when measured against the substantial benefits of judicial economy achieved by class treatment of the predominating, common issues.”).

{98} We do not determine, nor do we intend to pre-determine, how the district court should procedurally handle the class or any divisions of the class, the management and processing and or adjudication of the claims of individual class members, and the proofs of the elements of their antitrust claims. The court has numerous management tools at hand. See In re Visa Check/Mastermoney Antitrust Litig., 280 F.3d 124, 141 (2d Cir.2001). If the court has second thoughts on any issue, it can reconsider and either decertify or modify certification if the manageability of damages adjudication or distribution proves to be an intolerable burden on the judicial system or otherwise proves to create a situation that is less fair and efficient than other available techniques. See Link, 550 F.2d at 864; In re Sugar Indus. Antitrust Litig., 73 F.R.D. 322, 355, 358 (E.D.Pa.1976); Hayna v. Arby’s, Inc., 99 Ill.App.3d 700, 55 Ill.Dec. 1, 425 N.E.2d 1174, 1184 (1981) (stating that courts will allow certification anticipating that “as the case proceeds to trial on the merits, ... evidence will be adduced to alleviate the difficulties perceived in the identification of class members, the computation of damages as well as the administration of those damages”); cf. In re Cardizem CD Antitrust Litig., 200 F.R.D. 297, 326 (E.D.Mich.2001) (noting that the plaintiffs contended that purchase data was readily available to ascertain individual damage amounts, and that if complications in calculating damages become evident, the court could “alter or amend its class certification order before a decision [was] rendered on the merits”).

CONCLUSION

{99} The Antitrust Act allowance of indirect purchaser access to the court for recovery of damages and the remedial purposes underlying Rule 1-023 are advanced, not diminished, by allowing the price-fixing claims to proceed as a class action.

{100} We affirm the district court’s Rule 1-023 certification of a class.

{101} IT IS SO ORDERED.

*257WE CONCUR: MICHAEL D. BUSTAMANTE, Chief Judge, and A. JOSEPH ALARID, Judge.

1

. Price-fixing conspiracy claims were the subject of several federal nationwide antitrust class actions filed by direct purchasers of cigarettes. These actions were consolidated and transferred to the United States District Court for the Northern District of Georgia. The district court granted summary judgment for the defendants on the issue of conspiracy to fix prices, and the Court of Appeals for the Eleventh Circuit affirmed. See Williamson Oil Co. v. Philip Morris USA, 346 F.3d 1287, 1291 (11th Cir.2003).

2

. An antitrust treatise makes this sweeping comment in regard to lump sum judgments: "Interestingly, there has never been an antitrust class action in which a lump-sum judgment was entered following a trial of common issues holding a defendant liable for an aggregate amount to the entire class." 2 Antitrust Adviser % 10.46, at 10-103 (Irving Scher, 4th ed.1995).

3

. One antitrust treatise observes that "[t]he overwhelming majority of antitrust class actions fall under [Rule 23(b)(3)'s predominance requirements],” and that "[i]n antitrust cases, courts are more likely to consider the critical issue to be whether common liability issues predominate and to disregard individual damages (although not impact) questions.” 8 Julian von Kalinowski et al., Antitrust Laws and Trade Regulation §§ 166.03[3], at 166-44; 166.03[3][a][i], at 166-46 (2d ed.2003).

4

. In Newberg's view, it is settled law that class-wide proof of the measure of damages in price-fixing cases is proper, followed by a second stage of litigation to determine amounts of damages for each class member based on an aggregate damages verdict. See Newberg, supra, §§ 10:5, at 486-87; 10:6, at 488; 10:7 n. 1, at 489.