He may want SR, but he certainly wont get it. Banning him would serve no purpose whatsoever. If he does have other accounts, he will start using them instead. If he doesn't, this is TOR. It is anonymous. It is the reason why he has so much feedback. He can create an infinite number of buyer accounts, purchase his own e-books after he has lowered the price to 0.00, finalize, and give himself whatever feedback he wants. This is called feedback padding. There is a whole lot more to this that I simply cannot go into detail on in case he is reading this thread. We have taken several precautions. He wont be successful.