Microsoft (http://shop.microsoft.com/devtools/) - $549 full version, $339 upgrade version

Programmer's Paradise (http://www.pparadise.com) - $518.99 full version ($418.99 after a $100 mfr rebate), $317.99 upgrade version

Micro Warehouse (http://www.microwarehouse.com) - $529.95 full version, $329.95 upgrade version

amazon.com (http://www.amazon.com) - $529.99 full version, $333.99 upgrade version