Thrift stores very often have a lot of glass ovenware for real cheap. It might still be Pyrex, but you’re not supporting the company by buying it. If anything, you’re supporting the environment by reusing, and thrift stores are generally local as well.

Bormioli Rocco is an old Italian glassware company that makes various containers and glasses, but they do also have some stuff made in china so you have to check to see what you’re getting.

Duralex glassware is made in France. I bought a few bowls of theirs recently, they’re sturdy and not too expensive.