If you needed a reason to join one of the many bulk shopping clubs in the world, this could be it. Costco has listed the Xoom WiFi only version on it site for sale at the price of $589.00. The site is saying that all pre-ordered devices will ship out March 27th, which is just a few days away! If you have six bills burning a hole in your pocket, and have been drooling over the Xoom, this could be the deal for you. Happy shopping!