A question from a fellow grower:
My question is. Where can I buy a complete 600 whatt HPS set up? with 6 inch exaust fan ?
I have a real nice stealth set up using CFLs ,but want to upgrade to grow with only 1 light,instead of 7 CFLs.
Your best bets are probably online, e-bay or amazon.
Right here! 
I have had one for over a year and it works great. Best price too. This is my6th HID lamp, and my 1sy digital. Comes with everything you need except an air-cooled reflector (optional)