Maybe Librepay integration of some sort could help. Maybe that platform should be a little more ambitious and offer server operators and it's users in the fediverse better pricing.
It's fairly straight forward. Just need to make sure your unlocked phone includes the bootloader being unlocked. There's a list of supported devices for UT on this link.
https://devices.ubuntu-touch.io/
I run Ubuntu Touch on Google Pixel 3A XL and use Firefox and waydroid for android apps. Runs great even though it was released back in 2019. Governments must legislate all phone boot loaders, and service providers, be unlocked.
Maybe Librepay integration of some sort could help. Maybe that platform should be a little more ambitious and offer server operators and it's users in the fediverse better pricing.