Another question (sorry): if I check the option the seller automatically receives his commission with paypal, paypal will take commissions sune first time on sale, then a second by transferring money from my paypal account to that of the seller? Or when the buyer makes the payment, I get a part of the commission (and paypal takes his commission on what I get) and the seller automatically receives his commission and paypal takes his commission on that of the seller directly? I would like to know if using the automatic payment of the commission avoids paying twice the paypal commissions (when I receive payment, and when I pay the seller)