Earlier quoted context omitted.
It's more like $300+ dollars but there's another, more important point: hard drives fail. If we're talking about YouTube creators who spend hours producing culturally relevant content, we're going to want a much more robust backup strategy than simply throwing it on an external hard drive. Is it possible for a home user to build a storage system with high availability and off-site backups? Sure. Will it be affordable…
It takes 20 minutes to sign up for 4 separate cloud storage accounts and upload to all of them. Or seed a BitTorrent. Or both.
Now, i cannot recall what it was called, but there was this one app that could upload files to dozens of them at the same time, provided that you have the accounts - if the files aren't publicly listed and don't compromise your privacy, that's definitely a route to consider.