GetGames offers preorders of downloads of Far Cry 3 for PC
. That's the lowest price we could find by $12. It comes with the Lost Expeditions Mission Pack. This game is scheduled to be released on December 4.
Also available are downloads of the Far Cry 3 Deluxe Edition for PC for $46.19. That's another low by $14. It comes with the Monkey Business, Lost Expeditions, Warrior, Predator, and Survival Guide packs.