US Pharm. 2009;34(9):8.Bentonville, AR -- Wal-Mart announced that it will be expanding its mail-delivery prescription program to 22 states and the District of Columbia. The program consists of free shipping of a 90-supply of any of approximately 300 generic prescriptions for $10 each. There is no membership or enrollment fee. The program also provides access to more than 3,000 other brand and generic drugs so that customers can get all their prescriptions at the same time.