I tried to register and the system said I didn't have a bank account linked to my paypal account. I did and I got the impression the system was a scam. They offered 24 for my book but then when I tried to confirm and seal the deal, they system said it could not because I did not have a verified bank account connected to my paypal account. It felt like they didn't really want to go through with the offer and it was just a scam for my email and paypal account info.