Amazon is just awesome in general. I have PRIME and so I use their streaming service a lot and even though their library can't compare with Netflix, their interface is better. They integrated the IMDB API into it which is a severely underrated feature.
Just any FYI for anyone picking up the Bioshock Triple-Pack on Amazon for $20, you can actually get the BioShock Dual-Pack for $5, and then get BioShock Infinite for less than $11 on GameFly's new digital distribution service...all activate on Steam, total = $16
http://digital.gamefly.com/#!/promotion/426 Use coupon code: GFDSEP20
I guess you also get a free copy of Mafia 2 included, but it's mailed to you (yes, a promo code manually sent postal). Even without it, BI for $11 is better than Amazon! Note on the Mafia 2...from the looks of CheapAssGamer it may be a limited amount, but who really cares :P