@filipesm Yes, that's it. I host instances with hundreds of active users that are on the Moon plan (they almost don't federate with remote servers) and I have single users on the top plans (high numbers of followers/following). Wanted to create a pricing page that for someone who has never used Mastodon didn't make it confusing.
Regarding the pricing model for single user, don't know. I host a lot of single user instances on the Moon plan and they don't have any problem.