Actually, with Ebay, I copped all the Hydro stuff, made my own bubbler and for about an initial investment of 400.00 or less, grew a white widow that put out 14 OZs. Add in the cost of running to the water store to bring back pure water and you have 150.00 more, a hundred for the extra light bill, that adds up to about 46.50 per OZ. Pretty cheap way to grow, and after your initial investment, all the grow stuff is free. The initial investment included enough nutrients to grow three or four more grows, so all it would cost for the next 14 OZs is 14.85 ea., pretty damn cheap I'd say. Now about seeds, if you want to change your breed every grow, you'd have to purchase different seeds. My advice is to plant a different breed with the first grow, wait for the plants to mature, then snatch the male out by the roots and dust one or two buds with the pollen, then you can start cross breeding to change your taste