One can sell used books at almost any used bookstore including prominent used bookstore chains such as Half Price Books. They can also sell books online to Internet booksellers such as Barnes & Noble or Powell's City of Books.
To sell books to a used bookstore, the owner of the books simply needs to take them to the shop. The shop clerk then looks at the books and makes an offer. In most cases, book owners can choose between accepting cash or store credit for their used books. Sellers who accept store credit sometimes get more value for their used books than those who accept cash.
To sell books on the websites of online retailers such as Barnes & Noble and Powell's, book owners have to enter their books' International Standard Book Number, or ISBN. The ISBN is printed on every commercial book, usually near a bar code on the back cover of the book.
Once the company receives the ISBN and an indication of the book's condition, the company offers the seller a price. If the seller finds the price agreeable, he sends the book to the company and waits for a check to arrive. Buying prices for used books are based on the book's condition and the demand for the title.