I wouldn't trust this bottom feeder to post it back. By Ebays own rules, it must be returned by a trackable method, but who knows if he'll use decent packaging. PP will refund him after you sign for it. They wont give a hoot if it comes back dented , covered in cow dung, or missing and a telephone directory in its place.
Mind you, he'd be a brave bloke to do anything daft like that. You know exactly how to find him
I would collect in person, as he's proved what he's like, and then give him a taste of his own medicine. Buyers think they can feck sellers around on a whim on Ebay.