Some bookstores that buy used textbooks are Barnes & Noble, TextbookRush and Powell's City of Books. There are different ways to sell textbooks, including going to the websites of these book dealers or in some cases taking the books directly to the store.
At the Barnes & Noble website, a seller can go to the page for selling used books and enter the book's ISBN in the appropriate box. By clicking on the "Get Quote" button, the seller can see how much he can get for the book. If the price quote suits the seller, Barnes & Noble sends a return label and a confirmation through an email, which can be printed out. Sellers ship out the books and wait until they receive a check for the book sale. However, the books must be in good condition and be worth more than $10 for a sale as of 2015.
Customers wishing to sell textbooks in good condition to Powell's City of Books can do this by going to one of their bookstores located in Portland, Oregon. For sellers living in other locations, this bookstore offers an online option, which entails going to the bookstore website and following the same procedure of entering the ISBN number for books and getting a quote. The bookstore does cover freight charges. However, their payment options are either through PayPal or store credit.
At the TextbookRush website, sellers can click on the "Cash For Books" button and following the same method cited above to get a quote and sell their books. The payment options are store credit, cash or receiving payments via a PayPal account.