Sell Textbooks and sell books with Sell Back Your Book for android. Sell Back Your Book allows you to get instant price quotes for over 600,000 books from your android phone by scanning the barcode of the book or entering the ISBN. We provide free shipping on all orders! The process: 1. Scan or enter ISBN's into App (If we are buying the item it will be added to the cart). 2. Review Cart and decide if you want to remove any items. 3. Hit checkout on Cart Page. 4. Check out and print your free shipping label out from your computer. We send payment via Check or Paypal once books are received. Sell Back Your Book has purchased over 800,000 items from over 100,000 customers and we are an accredited business with the BBB. If you have any questions feel free to call customer service (630) 800-1491 or email us at firstname.lastname@example.org.