[lpelszyn]

What do you think about crowd-funding further development of existing open source project? Did something like this happen?

Pay as you want for books is good idea, as long as you know what to expect. Good job on summarizing the outcome :)

[xamebax]

rvm (an open source tool for managing your Ruby environment) had a crowd-funding campaign: https://www.bountysource.com/teams/rvm/fundraiser They collected all the cash they needed, the maintainer took a break for some time, and now they're working on the next major release.

[sudapl]

The problem is, you never know how much people will pay in this model. I wonder what are the factors that would increase average price.

[kubindurion]

there should be some additional mechanism, if you pay more than average than you get X

[olasitarska]

So it's Humble Bundle style, right? It could work if you have more than 1 item. https://www.humblebundle.com/