You can have up to 50 users for free! Itʻs what I use for my derby leagueʻs website and we use the docs for internal communication. Itʻd be pretty easy to remove all the content and move if I felt like it - but so far why would I? Itʻs free, people understand it, itʻs free, and I use my own domain name. Also itʻs free, we can edit things collaboratively, and itʻs easy to use. And itʻs free.