Left, the Stimulus Package. Right, the Resurgence Pack.
The sale brings the Resurgence Pack and Stimulus Package DLC packs down to the far more reasonable price of $7.49 apiece. Each contains five multiplayer maps--three new and two based upon maps from Call of Duty 4: Modern Warfare.
With Treyarch's Call of Duty: Black Ops due out on November 9, publisher Activision is no doubt attempting to spark one last flurry of sales before the multiplayer community starts investigating a move towards the new hotness.