Americans spend more on prescription drugs — average costs are about $1,200 per person per year — than anyone else in the world. It’s true that they take a lot of pills. But what really sets the U.S. apart from most other countries is high prices. Cancer drugs in the U.S. routinely cost $10,000 a month. Even prices for old drugs have spiked, as companies have bought up medicines that face no competition and boosted charges. While private insurers and government programs pick up the biggest share