Did you strike this deal through Ebay, or outside Ebay? They have pretty specific rules about soliciting / buying listed items outside the auction. How did you pay? PayPal?? If so you may have recourse there if things don't work out.
I bid on a EOTech 552 Rev E. a couple of months ago from a seller that had ZERO feedback, and kept all his bid info hidden. To make a short story long, I didn't meet the reserve price and "lost" the auction (I bid $250). The dude emails me after the end of the auction and wants to sell me the sight for my bid price?!! Sweet deal, huh??
A) The guy was violating Ebay policy by soliciting me outside the auction.
B) He wouldn't invoice me through Ebay (there is an Ebay kosher way to work these deals, but you have to complete the transaction thru Ebay)
C) Would not provide name, address, phone # or reference.
I ran.
I know this probably doesn't help you.
"CAVEAT EMPTOR"!!!!!!