http://www.tf2outpost.com/trade/6439524 This is what's inside if it helps ya :) (Oh and I don't think they will make the box able to be traded because you can open it already. Not sure though)
Just thought I'd let you know :D
I don't know. I just saw the open option and I clicked it so I could uninstall Dota. I just don't think they'll have it up for trade(Any time soon at least) But the items can be traded! So it's if you want to wait and see or just try and sell like me.