Do not sell your books to them you will never receive your payment!
I sent books to them in February and I'm still waiting for my money. I have tried calling, which does not work and whenever I email them I get a response that they are going to send my checks, but I'm still waiting!
I don't even know how they stay in business. There are so many people that are going through the same issues.
They need to close down this site and business ASAP!