Just make sure that
his rating is
GOOD. If any doubts,
do not send money to anywhere. Usually, as Mike has pointed out, it's safe to send to a post box, (I have), as some suppliers do not like to have their personal home addresses known. (biff, thump, biff

.

). (If pick-up is available, they will give it out).
Check around the other dealers to give better idea on exactly how the rating system works.
Be careful, not paranoid.
HTH.

L.