I found it expensive as well in the past. Depending on your needs, you could look at Posteo.de and Fastmail.org. They're around half the price of Fastmail's low

I found it expensive as well in the past. Depending on your needs, you could look at Posteo.de and Fastmail.org. They're around half the price of Fastmail's lowest pricing tier, but have differences on number of aliases and a few other things. If you need a lot of aliases, Fastmail may be cheaper. Storage space, no ads, commitment to privacy are similar.