After the bad experience that I went through, and due to othe fact that anyone posting a sale in the exchange can then go and change the information in it (like the seller did), I have decided that if I make any purchases I will be asking for invoices with detailed descriptions of the items that I purchase. And of course I will not mind doing the same for people who request invoices when I sell something. I hope that they figure out how to freeze the sale threads after a deal is done so nothing can be changed in it aftewards. ALWAYS use G&S. Enough headache going through the refund process even when using G&S; not worth going through a dispute where the buyer has no protection.