I have 3 PRs on https://github.com/django-oauth/django-oauth-toolkit/pulls that haven't been merged for OVER AN YEAR due to the maintaners being overloaded and who are expected to work on this for free. The fact that these PRs are not being promptly reviewed have cost me at least 3000€ in potential grant work.

If I was told that I could make a deposit of $10 to get less stressed maintainers and a faster PR review cycle, I wouldn't even blink. I wouldn't even ask for the money back.