By the way, I'm also in the process of selecting a CNC service company for my own keyboard project for 3 units.
I will be happy to share my experience with you guys.
Already finished a keyboard around 1 year ago and used Weerg for the CNC and anodizing job.
The tolerances and quality of CNC job was great, the anodizing job (was silver, difficult to do right) was soso (but far from what Krelbit experienced) and they have limited colors (black or silver).
So for the CNC work I definitely recommend, for the anodizer maybe find another place.
Most of these companies seems to provide anodizing to customer that don't look too hard for cosmetic issues, and mostly for part protection.
Recently had a look at 3DHubs and Xometry US, they unfortunately don't accept orders from individuals, so is Xometry in the US.
But Xometry Europe does and I will probably use their service in the near future
I will keep you posted.