All collateral should be held by a trusted party (an escrow or a trusted BCTalk member).
Can you please provide the domain name list ?
What registrar did you use ?
He provided me with a list I can PM it to you if you want; I think he wants to keep it private, so far this seems kind of sketchy as he claims he will be getting 0.05 BTC in 3 days from a promotion.. awaiting his response..
I wouldn't trust someone who only gets money from any kind of promotion if I were you.
I think he is just selling his domains because it's abvious that domains is not that easy to be sold to anyone.