150 watt HPS help

http://cgi.ebay.com/Sun-System-HPS-150-Grow-Light-Fixture-affordable_W0QQitemZ200306846356QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item200306846356&_trksid=p3286.m20.l1116

Does anyone have experience with Sun System HPS?

is the ballast built in? sorry if this question doesn't make sense I'm new to hps. But i know some of the higher watt HPS have the lamp and them are connected to a big loud box? My grow is stealth and i currently have about 12 23watt (100 equivalent) and i would like to add a 150 watt hps.

If any one can help at all PLEASE do so!

Thanks
BlazeN

that light has an integral ballast so yes its built in. i dont have experience with store bought lights because i use industrial fixtures and make my own lights. i havnt paid anymore than 40 bucks for any of my 400 watt fixtures so the price is high to me, but i have never heard anyone bad mouthing sunsystems lights. if your room can handle a higher wattage then i would invest in a bigger light. shop around.

but on the other hand if the 150w is the size you want i think you will be happy with the performance of the light fixture, just not the light output.

heres a site i just used the other day. the light is cheaper but you still gotta pay shipping. here is the 150w so it just gives an idea how much they are.
http://www.4hydro.com/lighting/sunSystemHPS150.asp