The Capper-Volstead Act provides a limited exemption from antitrust liability for agricultural producers who market the products they produce on a cooperative basis. Without Capper-Volstead, farmers who agree amon g them selves on the pric es they 'll accept for their prod ucts and other terms of trade would risk being held in violation of antitrust law. Even with the exemption, agricultural producers are not f ree to un duly enhance the prices they charge, consolidate with or collaborate in anticompetitive conduct with nonproducers, or engage in conduct with no legitimate business purpose that is intended to reduce competition.