Sorry to hear that the man was dodgy. As en0traof0dn says sellers can only leave positive or no feedback.
I know it will not help now but if you sell in future for collection and they do not want to pay I would think you could report as a non paying bidder because all bids are legally binding and he could have been reported and you would have been able to relist. You could also avoid pay on collection and insist on paypal payment prior to collection to ensure you have the payment first. You could try going on the seller forums and asking for advice if you could still report him.
Such a shame some people like that bloke have to ruin such an easy transaction just because they want to push their luck.
I hope any other transactions you have go smoothly.