CHEAP BALLAST SETUP w/th cooltube

anyone have luck with this brand?

its pretty cheap!

http://www.ebay.com/itm/400w-400-watt-HPS-MH-Grow-Light-System-Set-Premium-Kit-Dimm-Green-House-iPower-/160683199645?pt=LH_DefaultDomain_0&var=&hash=item6b1c7931a4