Mastodon question

Question to whoever here uses Mastodon and is technically-inclined:

How reasonable an idea is it to run your own mastodon instance for solo purposes? (eg. as one would run their own email server, or at least point a host's mx to their own domain)

How much would this cost, and is it possible to reliably secure an instance to run as a one-person federated instance easily?

I guess how much it costs would scale based on how many individual accounts follow the one account on the instance, yes?