Yeah we get those kinda ads on this side of the pond on scamslist... Craigslist. Half the time I just mess with them and say I'm interested and get the infamous, I just moved to the UK so I'll have to ship it so give me your money first kinda deal. Maybe this is the exact opposite scam where they just moved to the US?
Anyways it's just best to avoid those kind of deals. It's not worth the risk.