If you live in the USA and have a library card, you can get audiobooks for free via libby with your library card number and login. If you’re looking for other sources, MAM is the goto.

edit: correction, their website says it’s worldwide, which is nice.

I mean a VPS is ideal, let’s be real. lol

If you’re in the states, the FCC has a tool to look this info up. It’s really useful when you move to a new area: https://broadbandmap.fcc.gov/home

edit: not cost, but just like availability. Still good info though.