In an antitrust lawsuit on Wednesday the complaint accuses apple and Amazon of conspiring to drive up iPhone and iPad prices by removing nearly all other resellers of new Apple products from Amazon’s website.

The proposed class action in Seattle federal court objected to an agreement that took effect in January 2019, under which Apple gave Amazon discounts of up to 10% on its products, in exchange for Amazon letting just seven of 600 resellers stay on its platform.

“Erecting barriers to entry to keep competitors out and raising prices in the wake of their elimination is precisely the kind of conduct that Congress enacted antitrust laws to prevent,” the complaint said. “The case is open and shut.”