Buying an old refubished computer and running whatever web server on a small & efficient linux distro is not really cheap in the beginning (since you've got to

Buying an old refubished computer and running whatever web server on a small & efficient linux distro is not really cheap in the beginning (since you've got to spend a few $ to buy the computer that will be a small home server), but in the long term it's really cheap (I spent 50€ in 2017 for an old dell optiplex fx160 on ebay, and it's still running my websites today).