I'm not disputing the 10% number (though I don't know what all it includes - does it include drug delivery systems, like what is under discussion in OP's article?). I'm disputing the overall conclusion in that paper that "drug costs aren't really worth focusing on." I also dispute the assertion that other areas of health care aren't also being focused on for cost insanity. 10% is still a huge number, and if you happen to be one of the unlucky souls dependent on a medicine that goes up in price by many multiples it's a gigantic deal to you.