The U.S. PIRG Education Fund has released Fixing the Broken Textbooks Market: How Students Respond to High Textbook Costs and Demand Alternatives.
Here's an excerpt from the announcement:
Today, a survey released by the U.S. PIRG Education Fund shows that 65% of student consumers have opted out of buying a college textbook due to its high price, and of those students, 94% they suffer academically.
Over the past decade, college textbook prices have increased by 82%, or at three times the rate of inflation. . . .
Open textbooks are faculty-written and peer-reviewed like traditional textbooks, but they are published under an open license, meaning they are free online, free to download, and affordable in print. 82% of survey respondents said they would do significantly better in a course if the textbook were free online and a hard copy was optional, which is exactly how open textbooks work.