I had a hard time tracking down an Asus Transformer in Australia with both the z3775 cpu and 500gb internal drive on the keyboard. They were either older cpu or new cpu no hard disk.
Managed to find it on ebay from taiwan http://r.ebay.com/p2M4iS for $539.00 inc delivery.
Shipping took about 1 week, super fast. The keyboard has Taiwanese characters and english, small price to pay as I know my girlfriend would not survive without the extra storage capacity.
Beat the price on the jb model with old cpu and no 500gb storage. Runs fully windows 8. Want more info, read the page.
Price?