What do you do about them? Scenario One: they bid hot and heavy near the end of an auction. Or Two: they place an attractive offer on a high-dollar BIN listing. Mainly talking about eBay here.
We've been online for 30 years now. Sure, someone could have been born yesterday but that's unlikely. So there's a serious risk factor. Do you 1) cancel and 2) ignore? Or just let things happen, with a good chance they'll pull a switcheroo on you after receipt?
More to the point: when push comes to shove, is there a policy for any eBay bias against newbs vs established power sellers, for example?
Also, what happened to eBay Concierge? That worked great for me but it seems to be gone now. Anyone else still have it?