Most of the Call of Duty Map packs are half-off on the PlayStation Network and Xbox Live right now. All the map packs for the older Call of Duty games – Modern Warfare, Modern Warfare 2, and World at War – are half price on both Xbox Live and PlayStation Network, going on sale for $5 and $7.49. Call of Duty Classic, the downloadable version of the original game, is half price ($7.49) as well. Black Ops maps are not on sale.

Thanks to Game Informer for the tip.