You might have seen Motorola's WiFi-only Xoom popping up at European e-tailers, but it's reportedly flying the red, white and blue today, having materialized at Sam's Club in the good ol' USA. Droid-Life stumbled upon several snapshots of these Xoom Wi-Fi vouchers, with a $539 price tag hanging above their heads -- plenty cheaper than a cellular Xoom, and also slightly more affordable than a similarly specced iPad 2. Of course, Sam's Club deals in wholesale
