Quicksell for keys

Something here http://www.steamtrades.com/trade/NidzG/h-trading-cards-bundle-leftovers-w-offer for Killing Floor?

killing floor for 1 key?

hello i relly want borderlands 2. would u want any of these??
http://www.steamtrades.com/trade/feN5M/h-steamorigin-game-keys-w-borderlands-2
for borderlands 2??

how much keys for borderlands 2?