Sell education textbooks online! Finished using your textbooks? Get fast cash for your education books by visiting our textbook buyback page. Find out how much Mybookcart is buying your used education textbooks for. Selling back your used education books is a great way to get money back for your education school books. The sell back process is easy! Type in the ISBN number of the books you want to sell and get instant price quotes! The return shipping is free and payment is issued by check or PayPal.