274. Business Case Problem with Sample Answer- Price Discrimination. Dayton Superior Corporation sells its products in interstate commerce to several companies, including Spa Steel Products, Inc. The purchasers often com- pete directly with each other for customers. For three years, one of Spa Steel's customers purchased Dayton Superior's products from two of Spa Steel's competitors. According to the customer, Spa Steel's prices were always 10 to 15 percent higher for the same products. As a result, Spa Steel lost sales to at least that customer and perhaps others. Spa Steel wants to sue Dayton Superior for price discrimination. Which requirements for such a claim under Section 2 of the Clayton Act does Spa Steel satisfy? What additional facts will it need to prove? (Dayton Superior Corp. v. Spa Steel Products, Inc., 2012 WL 113663 (N.D.N.Y. 2012)] (See The Clayton Act.)