In general, people I've dealt with on here and on PFF have been square. I can see where anti-gun trolls would say, "I'll take it"... then jack the owner around for a few days, then cut out and quit answering PMs or emails. It makes me wonder if that could have been the case. In any event, (sale, buy, trade) a person who agrees to buy something should first give the seller his or her phone number. If they refused to give that info, I'd cancel the deal then and there.