Amazon is running the 17 Days of Deals in Video Games promo running a 24-hour deal on different games. Today [December 6th, 2010] the deal is for all current and past Blizzard Entertainment games.
Starcraft II: Wings of Liberty - $47.99 (down from 59.99) WoW: Wrath of the Lich King - $19.99 (down from $39.99) WoW Battle Chest (includes WoW classic & Burning Crusade) - $19.99 (down from $39.99) Starcraft Battle Chest (w/ Brood War included) - $9.99 Warcraft III Battle Chest - $21.00 Diablo Battle Chest - $21.00
You can find this offer, ONLY for today, here. As in get going dude!
The Diablo Battle Chest is usually $40.00 elsewhere, so that's a sweet deal. It includes Diablo II and Diablo II: Lord of Destruction.