Online Fabrication Services
The following list are online fabrication vendors. Last we checked, they are still open for business. Most of these services can quote a price before any work is done.
Waterjet Cutting Services
Big Blue Saw
Some of these services have instant quoting. Export your CAD drawings in a format that the service requires, pick your material, and your quantity. The more you want, the cheaper each individual part will be.
I went through the process for a small aluminum part. The quotes can be seen below for CNCs, waterjet cutting, and metal laser cutting.