you could get cheaper then that, bag seed from buds you smoked and liked, and you could go around your house looking for old lamps and take the lamp apart so your left with just the part where the bulb screws in and the power cord and grab some cfls get as many of these as you can, or get 2 4 foot fluorescent lights , and you could use coffee rinds as nutes and other organic stuff, start a compost, you dont really `need` to spend anything , but the one thing id want if i was doing indoors is deffinatley a light timer then all you have to do is make sure there getting enough water, which they wont need much with those lights