The Prototype Pack is on sale for $7.49 (92% off) for 2 hours only at Amazon as part of their GameSpot Black Friday’spromotion. There’s two versions of the bundle. A Steamworks and a mixed DRM. Mixed means Prototype 2 is Steam activated and Prototype 1 is DRM-free or uses SecuRom. Make sure to pick the one you want.
The bundle comes with:
Prototype 2: RADNET DLC Pack
If you miss out on the deal, the bundle will return starting on November 11th, 2012 as the Game Downloads Deal of the Week. The price of the bundle will go up to $9.99. Still a good deal though.