My advise is not to buy one. It’s a nice idea. But even with the tech enthusiasts and Linux nerds (like me)… A lot of them will tell you it spends most of it’s existence in your drawer of unfinished projects.

It’s slow, has quite some annoyances and quirks. And by now the chipset that was already old on release, is ancient. It’s generally unusable in every-day situations. And the hardware limits what kind of Linux use you’ll get out of it. The newer pro version makes it better, but not substancially. And it’ll add it’s own quirks in return.

And the software (Linux) doesn’t work great either. Things have settled down and I don’t expect substancial change by now. Yet, you’ll have issues with the touchscreen keyboard. Copy-pasting things. Lots of things aren’t adapted for mobile. Any browser is sluggish and struggles with playing videos.

I’ve bought the hardware keyboard, too. And I can’t recommend that either. It’s just not a great product. It’s not great to type on it and it has more quirks. And it constantly drains the battery for me and I expect it to someday discharge the battery to a point where it’ll destroy it. I’ve tried several things and couldn’t fix that.

You might be better off buying a regular phone that is supported by postmarketOS. But I don’t have any experience with that. And I’m not aware of any good one that I’d recommend at the moment.