Enterprises operating within the European Economic Community have long faced the difficult task of ascertaining whether they are subject to the price discrimination restrictions of the Treaty of Rome. The difficulty stems from the ambiguity present in the Treaty provisions and is exacerbated by the lack of authoritative interpretation of their restrictions. However, a recent opinion of the European Communities’ Court of Justice, United Brands Co. v. Commission of the European Communities, has brought the contours of the price discrimination prohibition into sharper focus.