I agree though - $195 for this is a bit much:
https://images.prismic.io/teenageengineering/d379b4fd-3721-4...
Parts like this should ideally be manufactured via stamping, which would also produce any countersinks needed. Even better would be to have them cut and bent in a progressive die (also a super cool manufacturing process!) and would have all cuts and features done in one go. But if I were them, I'd probably aim for a buck or two for each sheet part, maybe up to five dollars if you wanted to keep it at a local shop with low volumes. But the big win of having just flat pieces is you can make a ton of components at once and they can take up very little space on a shelf. Get a few thousand produced and powdercoated, and then just keep an eye on when supply runs low.
Basically, if they aren't making 90% margin on these (all in, shipped to your door) I'd be disappointed.
That could be a fun assignment for a design course. Lots of technical details to consider, such as dimensions of standard components, but a lot of design freedom as well.