Red Faction Guerilla keycode for sale!

So I recently bought Metro 2033 and got a copy of Red Faction Guerilla with it.

I already own RFG, so I was recommended to try and sell the keycode here.

Basically I'm looking to make £5 (about $7) or so. Please post any offers here (I'm willing to negotiate). The money also needs to be sent via paypal and I will NOT PM / Email you the keycode until the money is in my actual bank account.