Making my own watch case

Hello! I am new to the fabrication hobby, and got interested as I want to make my own watch case. I have been able to get modeling/technical drawing help from someone on Fiverr, and I think they did a god job.

I am now trying to figure out the most cost-effective way to get the actual case made. I have started to generate quotes on Protolabs, Xometry, and Fictiv for CNC or metal 3D printing jobs; as well as reaching out to local machine shops over email.

The main issue is that I am only making this watch for me, not a production run.

If it would help I can share the files/drawings to get feedback. Any help is greatly appreciated!