expired GreenmanGaming.com - BioShock 2 for $5.98
This was posted 1 year 9 months 17 days ago, and might be an out-dated deal
Bioshock 2 for $5.98:
Next to Steam, GMG is my most used company for Digital Downloads.
Highly recommended for fans of the original Bioshock, but be warned that in terms of graphics & sounds, it's identical. If your PC could play the original, it can play the sequel.
EDIT: Not Steamworks compatible (Meaning you CANNOT use Steam to redeam it, though you can download it and add a shortcut to Steam)