Please vote to add a Mindmapping tool to OneNote

Or integrate http://coggle.it (like existing ability to insert code from http://repl.it)

It looks like that Mind map add-in costs $20. Is that correct?

There is an Add-in from OneNote Gem that you could check out. I just recently downloaded it, but haven't had time to play with it. They do have some other tools as well, so make sure you download the right one. I originally thought I had downloaded it, but it turns out I had downloaded something else that just had the Mindmap link on it.