Unfortunately, this looks like a typical "turn and burn" to me. Until the community hears from him, he's on the list of complete, untrustable, unworthy scumbags.
A tip for the new guys reading this - there is almost nothing that can't be taken care of with a PM or a phone call. In a perfect world, passes, trades, sales, etc. should all be turned in 24 hours or less. If you can't fulfill your end of the bargain, communicate so with the date you intend to take care of business AND FOLLOW THROUGH. It's really that simple. There is NO excuse for dissappearing off the face of the earth.
Life does indeed happen but keep this in mind: When you enter into a transaction, as a pass trader, buyer, or seller of products, you have made a "contract" with the second person in the trade, and the community at large. In this community, these contracts are taken very seriously. Reputations are everything.
Good luck, folks - B.B.S.