Polarismail ups prices, adds new service
 

Wow, Polarismail doubled the price of its Basic level to $1.99 per month and raised Enhanced to $2.99. Still reasonable, but a significant price increase if you have a few mailboxes. They've also added a OEX level currently at $3.99 per month, but with regular pricing at $4.99. I'm assuming that is Exchange email. https://www.polarismail.com/pricing/

Keeping exchange rates in mind, the monthly price varies little from Posteo and Mailbox.org, it's still very cheap.

I haven't used Polarismail yet, so I don't dare to say if it's good or not. I believe they are based in Canada? Not sure how strict privacy laws are in Canada either.
But anyways, regardless of that, the price can hardly be called "high". It's probably amongst the cheapest providers out there that focus on security, along with Posteo and Mailbox.org. Proton is sadly enough a bit more expensive.