Two Dutch toychains show new prices for the Xbox 360 in their advertising. The Xbox 360 Arcade will drop from €279,99 to €199,99. The Premium Xbox 360 will cost €299 instead of €399 and the Elite will drop to €399. The Intertoys folder shows the price for the Arcade.
[Upd.] I made a mistake, I mistyped the price of the Premium Xbox 360. It was €349, not €399.