I did a trade / purchase with Haunted Undead back in October of last year (2009). 30 Black Legion Chaos Marines, 3 Rhinos and 1 Abbadon.
All bar the Abbadon turned up and despite promises to send it and requests from me during the intervening period, Abbadon still has not arrived and no apology or explanation has been received.
Granted, the vast majority of what I paid for has turned up, but if I didn't want the painted model of Abbadon I paid for, I wouldn't have paid for it!!!
Beware when trading with this guy - make sure you get ALL that you asked for!!!