I've bought a few bits of software from ebay in the past but have always been careful to ensure that the license could be legally transferred (and Microsoft's own licensing department have been surprisingly helpful). This time I wasn't paying attention and bought a copy of Microsoft Office 2010 Professional that's almost certainly counterfeit (but they've done a pretty fine job of it).
Since I'd paid by PayPal getting the money back shouldn't have been a problem but I did email the seller. To my surprise I got an immediate refund no questions asked and then silence; I've been unable to get a return address out of him to send the stuff back.
The chap seems to be regularly shifting Office 2010 Professional packages in ones or twos using identical auctions; all his auctions are private but his feedback seems good.
Having had a refund it feels slightly dishonest not doing everything to send the software back but I can't decide whether he's been shafted by a dodgy supplier or is knowingly selling hookey software and just doesn't want the inconvenience of feedback pointing this out.
What, if anything, do I do next?