The Law: Balm for Drug Buyers

Few types of consumers have had to put up with as many shopping headaches as those who buy the $7.5 billion worth of prescription drugs now being sold annually in the U.S. Prices in the same community may vary by as much as 1,000% from one drugstore to the next. But since 29 states have statutes or regulations restricting pharmacists from advertising prescription-drug prices, about the only recourse the thrift-conscious purchaser had was to trudge from store to store.

A remedy was prescribed last week in a 7-1 landmark decision by the Supreme Court...