Even if you only have a basic understanding of tools and how to build things you could DIY the same thing for a fraction of the price, there are DIY grow box designs all over the forums/internet. If you have absolutely no means to build one your self and you have the money to spare then go ahead, from what Ive heard the good quality ones actually do what they claim, however there is no way I would ever spend $3000+ on something I could build for around $500, no fucking way! If you think you could build one but don't have any tools try to borrow some from family or friends, you'd be surprised what you could do with just a few tools, a few bucks and a trip to home depot.