Cash4Books.net will buy your used books and pay you for them by check or deposit into your paypal account. Just search by the ISBN on your books to find out how much they are paying, then box all the books up with the invoice they provide and slap on a shipping label (printed from their site) and take it to the post office, UPS, or Fedex. It's that easy! I got my shipment ready this morning and will be sending it out. Now I have another $10 to add to my earnings, and I can kick back and relax because I reached my $5 goal for today!