I sent Sellbackbooks five different books. The first they paid but slowly. The second they said it was not a real copy and wanted $10.00 to send it back. The next to orders they did finnally pay after I clled and emailed many times. Now the last order they have had since 3-17-19 and it is now 7-4-19. They are no longer responding to my emails and I am haveing trouble getting them on the phone. Not sure if I'll ever get paid or get my books back. Beware this company!