Ive seen 4 30W cfl's on Ebay for less than £50 that would be a good start for ya FB. Overall for one 200w and 4 30w how much would my electric bill go up by a month? Trying to do a stealth grow and dont pay for the electric bill, I understand they are "energy saving" but they will be on 18/6 for i assume 3 weeks and 12/12 for 8 weeks.