If you will be purchasing a true or tag aero system you will have to shell out a some money. Atomix makes one that is about 3000 dollars. I am making a tag system right now and have invested about 500 dollars in it with the high pressure pump, micro-jets, pressurized tank, and some other things. If you dont have time then aero is really not for you, unless you have someone else looking after it for you. If it were me and i was working all the time and didnt want to spend a ton of money do a simple dwc grow.