With more content, I wouldn't even blink at a 20-ish dollar price tag on steam, and though it might be a hassle if this game got some form of co-op, I would happily bump it up another 10. It would slot right in with games like My Friend Pedro and Hotline Miami.
I only encountered one bug (as to be expected in a beta), where the game would deepfry itself in the main menu and quickly turn black, slamming my GPU to 100% usage in the process, causing my RTX2080 to give off the most nightmarish coil whine I've ever heard to the point I was genuinely worried.
However, that aside.
As it stands, this is an excellent game already and absolutely worth the play, and definitely worth it for the devs to make a full release out of one day.
You certainly have my good wishes.