You can write in Markdown, and sync with git. You can set a minimum price, but in our experience people often pay more.
A couple of notes:
1. The ability to have a book be "in progress" is not necessarily a good thing, because you can get stuck in unfinished mode (like our book :().
2. You can publish a print-ready PDF (https://leanpub.com/productiongo/print) but you'll need to purchase an ISBN separately (if you want).
You can write in Markdown, and sync with git. You can set a minimum price, but in our experience people often pay more.
A couple of notes: