Ten dollars is nothing. As others have noted publication charges tend to run more in the thousands. And talking of programming tools, like git, and gerrit for

Ten dollars is nothing. As others have noted publication charges tend to run more in the thousands. And talking of programming tools, like git, and gerrit for academic papers is completely off base. Most mathematicians will never even have heard of git. The "free" version is something like what the episcience project is attempting. Edit: And as yet others have said, it's crucial, especially in a structurally very conservative field like mathematics, to stay as close to the conventional model as possible.