[antrix]

I wrote a short book recently [1] and went through a similar process. Started writing using Markdown & Pandoc but soon realized that Markdown isn't a very good fit for longer technical documents. As an example, support for asides aka admonition blocks is nonexistent. I switched to Asciidoc + Asciidoctor and the process was much more productive.

[1] Python for the busy Java Developer. http://antrix.net/py4java

[sysk]

Have you tried Gitbook? (https://www.gitbook.io/ https://news.ycombinator.com/item?id=7524956)

[antrix]

If I understand correctly, the gitbook toolchain isn't freely available. Nor does gitbook address any of the limitations of Markdown that prompted me to switch to Asciidoc.

[steveklabnik]

20% per transaction is just too much.