If you're willing to give the key first, I'd most likely do this. I have a steam tradeable version of Poker Night.
I was thinking the same thing. Like me, you do not seem to have any rep. And since I am giving away far more than I am receiving (and I have never dones this before), I think I have to play it safe and require that the other person goes first.
Shoulda gone with me, if you followed SteamGifts you woulda known my name and seen me active. Ahh well, you live you
learn.
edit: you really should have looked at his profile to see his BANNED trade status.
That's your mistake. ANYONE can post +rep on profiles. You check rep here, trade status, and there's another site that I can't recall that someone here would tell you about to check trade status. I feel bad for you, but you HAVE to be careful when it comes to keys.
Was con-ed out on my key by http://steamcommunity.com/id/krtek123123
And he locked his comments immediately afterwards.
I just bought the Humble Weekly Sale (https://www.humblebundle.com/weekly), but I have every game but one.
It would be a waste to throw away all of those great games just for Poker Night at the Inventory.
If anyone was willing to trade me a Poker Night at the Inventory key/gift I would be more than happy to give them the whole Telltale Games Steam Key (including PNatI, but NOT WALKING DEAD).
Important Note: This trade does not include The Walking Dead game.