Deal Alert: Killing Floor for $3.99 On Steam

I completely missed this game when it came out.  How did I not hear of this?  The game is amazing.  You can buy the vanilla game for a low low $3.99 on Steam right now.  The offer goes through July 11th.  Also, between now and then you can install it and play it for free, so you can even try the full game before you buy.