This sounds about right. My parents only use their browsers. They literally do not use any applications outside of the browser. They would be just fine on Linux but change is scary and everything just works.

Most normies will never pay for a search engine. I've tried and tried to show them the advantages of Kagi but the value just isn't there for them. I ditched Google for Kagi long ago and I couldn't be happier.

Check out the Dell Wyse 5070. You can find them used within your budget.

Rsync is what you're after, especially if you're moving large files. I regularly transfer hundreds of gb using rsync and it's great.

This is not spam. The blog post discusses a current hot topic. There's no advertising on the site. OP has nothing to gain by sharing this. Don't make people hesitate to post quality content just because the topic has been discussed elsewhere.

https://mxroute.com/ or https://www.fastmail.com/

I picked up a cheap lifetime account on mxroute a while back and have been pretty happy with it.