Tyler Cowen and Michael Brandl write a bit about high textbook prices. At the end of the day, it seems to me that in both the higher and lower education contexts, the case for open source textbooks is strong. Read a bit here about the California Open Source Textbook Project, which has a K-12 focus. The same logic, however, applies most everywhere. In the college context, obviously, some books are going to be so specialized that I’m not sure this would work. But for anything used in grade school, and any of your big, generic college subjects you should be able to do it.