World of Warcraft have been greatly exaggerated, but the price of the game is falling. This isn't entirely unexpected, but the game's two more recent expansions have just seen a significant drop in their EU prices, with Wrath of the Lich King dropping to €19.99 and Cataclysm dropping to €29.99. If you've been playing the game in Europe but have yet to pick up the later expansions, this might be your incentive.
While some retailers have instituted their own price cuts in the time since the release of these expansions, these latest price drops come from the upper management at the company rather than being a limited-time sale or a reduction of overstock. The price move seems to be a result of the newly free-to-play nature of the early game and the upcoming Mists of Pandaria. No word yet on whether or not a similar official price drop will be mirrored in the US.