Originally Posted by biffer
Where can I come unstuck
Paypal tend to side with the buyer. There will be a 'registered' address (or verified address) on the paypal account, which if you don't send to you loose all YOUR protection as the others are saying.
There are various scams, but imagine if he has hacked / stolen someone's account or card details. He (or someone acting with him) will receive the radio and then Paypal will discover the stolen account/card and claim back from you.
If he is legit, he should be able to change the verified address I think (although it might be a problem to do internationally).