$24.95/yr seems high. Are you looking at a specialty TLD? I paid around 10 USD/yr for a .com with Cloudflare, and 12 CAD/yr for a .ca with Canspace.

Their web page doesn’t really mention self-hosting, but there’s github link way down at the bottom and that has self-hosting instructions.

It’s just a one-off transfer, I’m not planning to stop the transfer, and it’s my media library, so nothing should change, but I figured something resumable is a good idea for a transfer that’s going to take 12+ hours, in case there’s an unplanned stop.

I was planning to use rsync to ship several TB of stuff from my old NAS to my new one soon. Since we’re already talking about rsync, I guess I may as well ask if this is right way to go?

When was the last time you checked? A client was added to the WebOS store maybe 2 or 3 years ago for recent models, and support for older models (like my C9) came months later.