White, et al. v. R.M. Packer Co., Inc., et al., 635 F.3d 571 (1st Cir. 2011)

(defendant gas stations did not illegally price gouge motorists in the wake of Hurricane Katrina, but merely engaged in parallel pricing known as "conscious parallelism"; plaintiffs failed to prove a "gross disparity" in prices; local market was oligopolistic and highly conducive to parallel pricing; lack of proof of whether parallel pricing was achieved by agreement or independent decisions).