homegrown@social.growyourown.services@social.growyourown.servicesThe cost per user of a Fediverse server is mainly determined by how large your server is.
A single person's server typically costs about 5 euros per user per month, but the same type of server with dozens of people on it typically costs about 0.5 euros per user, and a server with thousands of people might only cost about 0.05 euros per user.
Getting together with even a few other people to run a server together can make it a LOT cheaper for all of you.