>> Further, if there is any measurable value to much art other than how much someone pays for it?

Well, materials cost money, and then there's the time spent producing the work of art. Assuming each artist has her own hourly wage (think minimum wage for a no-name artist), there's your perfectly measurable value of any artwork.

https://binnedart.com are trying to do something along these lines.

That's great to hear! I need your email for that - the easiest way to get it is by requesting one here: https://bitmia.com/invitations/request