$341 UD7 - http://ncix.com/products/?sku=111128...cture=Gigabyte
$270 UD5 - http://ncix.com/products/?sku=111128...cture=Gigabyte
$317 UD4?? - http://ncix.com/products/?sku=111128...cture=Gigabyte
$138 - UD3 - http://ncix.com/products/?sku=111128...cture=Gigabyte

No idea if these are the retail prices but this is what you find on their site as of today.