Ok, well no one has responded, guess that means no one has tried this place yet. Well, I decided to give it a go. I got the following for only $60 delivered in only a couple days:

2 - 400 watt HPS bulbs
2 - 150 watt HPS bulbs
1 - 150 watt HPS ballast

These guys seem great. I'm looking forward to setting up the ballast in a cabinet this weekend, it came with a good wiring diagram to connect it. If you need a cheap 400 watt ballast, they're only $60 here.