Amazon has the new World of Warcraft expansion Wrath of the Lich King (regular edition) available for $36.99 (save $3).

In addition, the Collector's Edition is available for $69.99 and is currently their top selling video game.  They have a purchase limit on this edition, and it looks likely to sell out and be in high demand.

It is set to release on November 13, 2008.  Amazon will not charge you until it ships and you are guaranteed the lowest price if it drops.

Check it out:  Amazon - World of Warcraft Wrath of the Lich King

Purchase Limit Policy
As you may know, the World of Warcraft: Wrath of the Lich King Collector's Edition is in great demand, and there are limited quantities of this product across the U.S. In an effort to provide as many customers as possible with the opportunity to purchase a copy, we are limiting the total number that can be purchased. As a result, each household may only purchase one copy of the World of Warcraft: Wrath of the Lich King Collector's Edition total.