I have never had any problems with an APUG sale.
Maybe phone contact should be made if the sale exceeds a certain dollar value.
Most Rapscallions love the anonymity that the Internet offers.
Said Rapscallion might be less inclined to engage in misdeeds
if a phone call was made to exchange contact information.
Although, I once bid on a " photo lens " on eBay.
I was the lucky bidder, and got the lens for .99¢ w/ free shipping.
And promptly got ripped off, for some strange reason ...