I was worried when I placed my first order with GA that because of the extremely low price, I was going to be scammed! But I got my first order (3 600w kits) fast and setup a year ago this month. Still havnt had a bit of probs with the ballast tho one bulb permaturly xpired but they replaced it no problem. I utilize the dim fieature alot, so even using that hasnt brought about any issues. Order 3 more this week, Thnx GA!!