Mike from brum
What you could do is meet at the airport. Have the money in a locker somewhere and only give him the key to the locker when you have the stuff.........no wait, that was Get Shorty, not a bad movie. Anyway the only way to be 100% certain of things, IMO, is to meet face to face, you could buy something over the net and when it comes you find a huge scratch down the side or whatever.