Even though it hasn't been confirmed, pretty much everyone assumes it's free like all of Valve's DLC. This is PC only though, it's most likely gonna cost some money on Xbox Live, thanks to Microsoft's required fee. I've seen on a few websites and they say that PC players will have to pay it too :/ How would that work? Someone will Re-Host it for free anyway. I don't think that's possible. It isn't possible to pirate Steam games anyways (well, it's possible, but the game will have very limited options). Killing Floor also has paid DLC (the characters) and it's impossible to use pirated content in combination with your legal copy of the game registered through Steam. I also don't think it's paid DLC for PC, still waiting for Nugget's source. Not paying attention as usual