I put in my eBay ads only confirmed addresses, but every once in a while someone will purchase using an unconfirmed address and pay right away. I have been going ahead and accepting but paying extra for the signature confirmation to stay protected with PayPal. Is there a way to block all unconfirmed people from bidding in the first place? If I refund their money then I am stuck with the listing fees and relisting again. Is there a better way to deal with unconfirmed people?