Get Games Go has Borderlands 2: Game of The Year (Windows PC/Mac) for $15 downloaded. Includes all 4 add-on content campaigns, increased level cap, new battle arenas and 2 new playable characters. Hybrid first-person shooter and RPG game features co-op play, updated gun system, and an integrated storyline.
GameFly has the ASPYR Build Your Own Bundle with three games for $15 downloaded, four for $18 downloaded or five for $20 downloaded. The games are for Mac only except BioShock Infinite, Borderlands 2, Civilization V, and Civilization V: Brave New World (PC or Mac).