400watt Ballast Help

Need help finding a cheap 400watt ballast? Check this out . . .
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=150925071560

That's about as cheap as they get. I'm a Lumatek kind of guy...$113.

My best wishes to your internal fan.

if it's missing its oriinal packaging wouldn't it probably be used? the price is too cheap. seems too good to be true. if it came with a warantee i might buy it. ask the seller.