SDCL § 37-1-26: Proof of damages--Assessment in aggregate.

In an action pursuant to §§ 37-1-23 to 37-1-32, inclusive, where there has been a determination that a defendant agreed to fix prices, damages may be proved and assessed in the aggregate by statistical or sample in methods, by the pro rata allocation of illegal overcharges or of excess profits or by such other reasonable system of estimating aggregate damages as the court in its discretion may permit without the necessity of separately proving the individual claim of, or amount of damage to, persons on whose behalf the suit was brought.