<p>I only rent books that I know I won’t need for another semester. I use Chegg. They also sell books- after they have rented a book out so many times and the condition is “low” (but still usable/readable) they will sell the book for a pretty low price. I got my Spanish book last year for six (yes, SIX) dollars, when it’s about 85 New and 50-ish used.</p>