www.bookbyte.com Instantly type in an ISBN number to find out if your book is one being purchased. If so, you will be shown an offer which you can accept or decline. You can enter as many ISBNs as you would like and decline or accept each offer. When you’re finished, the system will generate a shipping label for you to use when returning your books. You can expect payment in the form of a check around a week or so after the books are received.
www.cash4books.net Works much like Bookbyte in that you enter your ISBN number(s) on the home page to see if they are currently being purchased. Shipping to Cash4books is also free and there is an option to be paid by either PayPal or check. If you have an IPhone or Android you can download an app to make selling your used books to Cash4books even easier.
www.textbookwheel.com Only buys textbooks that are in good condition; if the edition also contains a CD-rom or DVD, these must also be included in order for you to get full price. This site pays via PayPal anywhere from 24 to 48 hours after receiving the book. You can sell up to five copies of a particular book, and larger orders can also be arranged if you are willing to get prior approval. Unlike the other two sites listed here, free shipping is only included for orders over $40.00 in most cases.