I am purchasing my quantum 600 on E-bay. It is a link that another grower had posted on another site and several people have purchased from them. New 600 watt Quantum switchable Ballast - $196 with free shipping.
I can buy 2 600's for the same price as a 1000watt. here is the link-
http://cgi.ebay.com/Digital-Ballast...477QQcmdZViewItem?rvr_id=&itemid=200382874477
