I think you should consider taking payment out of the equation. Instead of having people pay for the rental, have them earn points for first renting out their stuff and building trust in the system, and then being able to rent other people's stuff. You would have to make the system itself trustworthy (i.e. fully transparent and math-backed).
I'm working on a platform which would enable something like this very quickly, and I'll include it as a test case.
I'm working on a platform which would enable something like this very quickly, and I'll include it as a test case.
Thank you for sharing!