The major record companies settled an antitrust suit brought by 40 state attorneys general against them for alleged price-fixing in the sale of CDs. The record companies agreed to pay $$\$ 67.4$$ million to consumers who purchased CDs during the period from 1995 to 2000 . The consent decree stipulated that the record companies had required retailers that accepted subsidies from record companies for advertising CDs not to advertise CDs for sale at a price agreed upon in advance. The record companies said that the policy helped keep independent retailers in business because they could not afford to price at Wal-Mart levels. Wal-Mart always advertised CDs for sale at a price below the floor agreed to by the subsidized independent retailers and the record companies. The record companies did not admit any wrongdoing and, in addition to agreeing to the $$\$ 67.4$$ million, also agreed to provide 5.5 million $\mathrm{CDs}$ to libraries, schools, and nonprofit organizations (worth $$\$ 75.7$$ million). $${ }^{22}$$ What antitrust violation were the attorneys general alleging? Is a minimum price a violation of antitrust laws?