Wanted to bump this and add that you can use Highbay lights from Ebay (MH, not HPS as Highbays are rare in HPS), got me a 400W unit for under 50 bucks shipped. Quick trip down to the Hardware store for some sheet metal, chain, s-hooks, and eye-screws and will have myself a 400W MH with reflector for about 60 bucks, just great for the seedling/Veg cabinet/room!! Out with the four 4' flouros after they get a few inches tall and in with the MH!

Learning that you don't have to spend alot, just spend it wisely!!!