Most upvoted comment
[Steam] Midweek Madness: Spec Ops The Line @ $7.49 (75% off)(r/GameDeals)
Or, for $2.50 more than on Steam, you could get Spec Ops plus both Bioshock games as Steam keys. ($9.99) www.amazon.com/Desert-to-Sea-Bundle-Download/dp/B0…
EDIT: I forgot. As the guy below says, it comes down to $4.99 with the coupon… Pay $2.5 less, get 2 more games.