A number of online book-buying services, such as Book Scouter and Campus Books, purchase books and textbooks from individual sellers. These services allow the seller to search online and determine the resale value of the books before agreeing to a sale.
The amount of money that companies are willing to pay for used books and textbooks depends on the condition and age of the book. Some buyers may require a photograph of the book to confirm its condition before finalizing an offer. Keeping books in excellent condition, without marking or highlighting any portions or bending any corners, ensures the greatest value on resale.