thats no mistake, ebay lets you know when you price something over the fair market value of an item,
in this case, its way over, and he did it on a bunch of items.
my only guess is that he is fishing for idiots(with money) to buy his items thinking they might be getting something fancy.
maybe someone will accidentally buy something and then ask for a refund, he might have terms where he keeps a lot of money.
not sure, but wierd and wrong!!