Okay, so you can tell why I didn't buy it directly from steam yet. Now I have found JB Hi Fi selling it for $79 which is a little better, but Steam haven't updated their page for retail cds that can be redeemed on Steam. I assume it totally does, because they all have since MW2 but I just wanted to double-check before I actually go buy it, unfortunately JB's website doesn't say one way or another.
Also, JB is currently doing a deal where you can buy MOH: Warfighter (for the same platform) for $39 when you buy Blops2. I know Warfighter wasn't great but is it okay for $39? (And yes, I know Warfighter won't redeem on steam).