Trading Dead Space 3 ORIGIN key for a steam Killing Floor key (PLEASE READ TERMS CAREFULLY!!!)

I'm looking for the steam game killing floor and I'm going to give an ORIGIN Dead space 3 key for it. Here are some terms.

1. You must trade the game to me first (I don't want to get scammed.)
2. The dead space 3 key is for ORIGIN. BE WARNED
3. You can check my steam rep here

http://steamrep.com/search?q=http%3A%2F%2Fsteamcommunity.com%2Fprofiles%2F76561198045232536%2F

READ CAREFULLY Thanks everyone.