To be honest, I've never had a bad deal with folks in Gemstone, even going back to when they were selling virtual items on ebay. I know I've heard of scams happening, but it doesn't seem that hard to insulate what seems like a higher risk transaction. I wouldn't assume someone is 'dangerous' because their account isn't very old. Find some alternative methods of payment that may be more secure. I sold my armor for $2k or so of bitcoin, which turned out to be very good in the end because I didn't cash much of it in, and it has skyrocketed in price since then. Anyway, certainly there are trustworthy people who could act as intermediaries while transactions clear and such, it doesn't sound like time is of the greatest essence here, especially if someone is looking for more rare items. Note to someone, it doesn't hurt to do a little homework on current rates, they aren't what they used to be.