Thanks orange. I'm may still have a lot to learn when it comes to growing, but I'm very good with the accounting part of things (probably because I'm an accountant).
Green, I think you're overestimating when it comes to pricing unless you're talking about buying top of the line stuff or setting up multiple lights. You can get a 600W HPS/MH light from ebay for $250. You can get a 3 pack of the fox farms nutes for $45, and the supplements pack runs $90. Thing is, you're not going to go through anywhere near a whole bottle of either type of nutes in 1 grow, so you can't count the whole cost as being for that grow. You can pick up a fan for $25, and if you really need ventilation and air filtering you can pick up a fan w/inline carbon filter for $150. Say another $25 for exhaust tubing and various hardware to hook everything up.
My total costs to date are less then $700, and that includes the costs for my doctors visit, MMJ registration fee, pots, clones, etc. True, I'm only doing a small grow of 6 plants and have plenty of space so odor and exhaust aren't as big an issue as they would be for a dorm or apartment dweller, but the point is that you don't need to spend $1000+ to get started if you're just growing for yourself. The best advice i've been given by any grower I know personally was to start off small and worry about bigger grows/more equipment once my existing set up had grown enough medicine to pay for itself.