They're cream of the crop. A lot of companies have been recently copying their designs. They certainly aren't cheap but you get what you pay for. They recently only offer black colors to speed up wait times, 5-7 weeks according to their website.
The money you pay for a Caselabs case is for the build quality. No rivets, thick aluminum, customizable. The added bonus is, if you are into modding, once you chop up pieces of the case, you can always replace that exact part. You can't do that with an off-the-shelf case like Corsair.
EDIT: I should point out, I own both Caselabs and Corsair cases and I like them both, for different reasons.