I think the price sounds about right though, considering what it's made out of. If it's all milled out of aluminum, that's very expensive. All of the component mounts are probably of high quality. The fans are probably premium fans. The tolerances of all the parts are probably very tight.
I know Cooler Master has some $600 cases that are very nice, as does Lian Li. If you have no intentions of ever spending that much on a case then so be it. You're probably the wiser bunch.
Only thing is though, Toms says that this is a "hernia inducing" design, but I was hoping/assuming that maybe it would be lighter than it looks.