In 2011, Bristol-Myers Squibb set the price of its newly approved melanoma drug ipilimumab—brand name Yervoy—at $120,000 for a course of therapy. The drug was associated with an incremental increase in life expectancy of four months. Drugs like ipilimumab have fueled the perception that the...

The U.S. pharmaceutical industry has again become the focus of considerable controversy. In understanding the economics underlying this industry, distinctions between short, medium and long-run costs are critical, as is that between economic and accounting costs. Consumers' heterogeneous...