The Motorola Xoom Android 3.0 tablet can now be pre-ordered in-store at Best Buy for Thursday, February 24 release. Also listed alongside the $800 tablet are its accessories, which includes the Porfolio Case ($40), the Dock ($50), HD Speaker Dock ($130), and the Bluetooth Wireless Keyboard ($70). When it hits the market it will be the first bona fide challenge to the mobile OS tablet market created by AppleĆs iPad, although the pricing of Wi-Fi plus 3G model has created controversy and may hurt its sales.