is this a good deal(for 400w HPS/MH)

[tevfik]

I will get the exact height when I get home from work. it is a regular bedroom closet, so I would say 8 feet.

as for electricity, I'm not really worried about the cost. I'm just wondering how much higher should I expect my bill to jump a month.20, 30 ,40? if you can just say a rough guess, that'd be fine. thanks

I can't tell how much, we're not using USD around here and we pay yearly
Maybe someone else can tell.
If don't, find your electricity company tariffs and calculate.