Wish they handled it better, but I knew about this a while ago, and the price is more than reasonable.
A decade without a price hike is extremely generous, especially at how cheap their plan was.
They are a FOSS company that makes a fantastic product I've been happy with for years, I'll gladly pay less than $2 a month to support them. Their server code is licensed with the AGPL, the strongest copyleft license there is, which gives me a lot of confidence.
Worse case scenario, they enshitify down the road, we are protected via the open source implementations. We've seen this many times in the past, Red Hat > Alma & Rocky Linux, Citrix Xen Server > XCP-ng, Terraform > Open Tofu.
Pay for your open source software, folks π