as far as i can see, you are the only one hating on him in this thread.
to OP, check the feedback tab in a member's profile, ask for detailed pics if you want to or make sure there are at least pics of the items he is selling. get all contact info (address, phone numbers, etc.) and don't be stupid about it. if they sound sketchy and keep changing what they're saying, be wary. if it's too good to be true, it probably is. and finally, do some research to make sure you're not getting ripped off.