This is for our Community Radio station. In Canada we had additional incentive to join the #Fediverse because of Meta's shutdown of Facebook and Instagram for online news services.
This isn't about Mastodon, but joining our WordPress server to the #Fediverse. And it doesn't give any financial info, but the "technical difficulties" were that the Fediverse plugin required more resources than our webhost tier had (so extra costs for a higher tier are needed).
https://radiowaterloo.ca/the-fediverse-a-new-social-messaging-platform-for-programmers/