Glad you were refunded, I wonder if Paypal/eBay will be taking action against either the seller or the courier?
I had a problem recently where I bought an iPad mini on eBay from a hijacked account, filed a dispute with eBay and got my money refunded, they're usually pretty good these days.
They are going to have to prove who was the criminal...the courier or the seller. My money would be on the seller, but a while back we had a mailman who was stealing stuff....going to be hard to prove.