I just bought a set of perfect 10.1dvc but I would have tried these if I could have got this deal. They are factory renewed and only come with a 90 day warrenty. But for 140.00 shipped for the pair its woth a shot.
http://www.cardomain.com/shop/cart.pl?action=del&qty_MBQPWD254=0
http://www.cardomain.com/shop/cart.pl?action=del&qty_MBQPWD254=0