Mikki, I have been buying and selling on this site; buying since March, selling since May. I've used paypal for both buying and selling and have had no problems. When I sell something, I send my paypal ID and they send the money. I have been asked to invoice them; that is no problem either. (In the menu, there is a place to send money.) Once you do this the first time, you will see how easy it is. You can PM me if you need additional info.