Hey, well ive seen quite a few threads started aboout people worrying about cost of lighting so thought id post this link. Only counts for people in the U.K and theres LOADS of info on there about costs..etc maybe not best thing to read when your toking on a reefer , with a little working out you can see what sort of price its costing you CFL - DIYWiki Hope it helps anyone worried about this. Captain Erb