I mean, Primer is rare, ok. But you don't need that. Depending on your costs, you can decide to keep thinkgs pretty lean.
I think the biggest problem here is distribution. Sure, you can find some small cinemas, but how much you get of the ticket price? How many people you can reach out? Would paid streaming on the web be a suitable thing (are people ready to pay for low budget movies on the web?).
For how bad a movie is, there will be always an audience (even if audience equals to your mom). My problem with this all reasoning (25 k per movie I mean) is estimating how big and scattered is this audience.