does skywater publish MPW pricing? (if you don't want to depend on google 🙂 )

not sure if it's the same process node, but efabless has some pretty nice-looking MPW options on their website

All i found was this https://www.efabless.com/design_platform/info which doesn't list 130nm

I recently contacted skywater directly about pricing, they can give you a rough estimate without signing an NDA, just use the contact form on their website. That said, they probably want to deal with a company not an individual.

Skywater would much rather have someone come to them saying "we tried out this design in a shuttle, it works, we want 1 million chips"