College textbooks are expensive, and prices continue to rise. The Bureau of Labor reported a 600 percent increase in textbook costs between 1980 and 2012. The average 2015 American college student graduated with over $35,000 of student debt, a portion of which came from textbook costs. In a recent survey of over 22,000 college students, 64 percent reported not purchasing a required textbook because it was too expensive, 49 percent stated that textbook costs caused them to take fewer courses, and 34 percent declared they had earned a poor grade in one or more courses because they could not afford to buy the textbook.