Ends 9/27 at 8AM PT. eBay with DigJungle has the ASUS VivoBook V500CA-DB51T 15.6" Core i5 Touch Ultrabook (Black) on sale for $499 with free shipping. Windows 8 64-bit installed. Goes for $600+ elsewhere.
Intel Core i5-3337U 1.8GHz, 6GB DDR3, 500GB 1366 x 768 w/ multi-touch, USB 3.0, Intel HD 4000