Modern Warfare Bundle [Amazon Weekly Deals]

I'm on the fence right now whether to buy the bundle or not. The price I think is quite attractive [$79.97 down to $34.99/56% as they say] for Modern Warfare 1-2-3. It's Steam redeemable.

The question is, because I already finish all games on pirated version [shame on me], and I will not use the multiplayer features, will it still be worth it or not?

http://www.amazon.com/dp/B00BFZERV2/