If you live in a very small city studio flat then this may be the way for you, very little space is taken up and it all come very neatly packaged.
But... if you want to make your own beer recipes, not one devised by another and want to learn the process and experiment then is is probably not for you.
I think it is a brilliant idea, I don't know how much you would hack it and add some extra malt here or swap out the hops there, but for a simple easy to use system with little mess and very low space requirements I think it is wonderful.
I will not be buying one, but it depends what experience you want, and how much you love cleaning fermenters :)