150 for a mini-ITX case is very reasonable. I don't this is the own you think it is.
They send you a bunch of flat panels of metal you have to bend into shape yourself, and are supposedly very flimsy and can be easily bent even once the whole thing is assembled. They didn't even punch out the screw holes so you have to bore your own holes and screw through them manually. The USB-C port on the front uses a 3.0 header instead of 3.1. And it can't even fit a small formfactor GPU.