It is strange as you are essentially asking someone to pay you $2,764.00 without even getting an address off them for delivery of the item you are planning to sell. Perhaps Silk Road will be gone by the time you actually receive the item in question. Perhaps Tormail will also be down. It is entirely possible that there would be no way for them to reach you. Furthermore, if you take a special interest in security as you say you do, you would have a current PGP Key up and would not have initially asked a buyer to purchase the item in question whilst sending their address unencrypted. Libertas