You may know what subjects are the most popular among buybacks, but some particular books sell much better than all the other editions taken together. For example, many people take anatomy and physiology courses every year, but none of them would want to buy an old textbook from 1995. This list can help you make sure that you will definitely earn money on reselling textbooks and learn what ISBNs are guaranteed to bring you profit. But before selling one of these textbooks back, check our buyback condition guide to earn even more money!