Oh sure, just buy more disks. Who do you think I am, that guy on the Monopoly box?
I stocked up on a few shuckable externals before the start of the second Grump catastrophe. $280/24TB (Exos inside). I'm finally getting around to setting up a pool, thinking 4+1 is kind of poor redundancy and wondering about adding another disk. The things are up to over $1,000 each, in the husk or not. Fucking hell. It makes me want to drastically scale back the size of my new pool in case a drive does die so I don't end up needing to buy a replacement any time soon.
I had a disk in my ZFS pool (a relatively tiny one, among the kind of people who have a home ZFS RAID5 array) go bad earlier this year and bought a used disk for the first time ever. Never even considered it before.
Still cost me as much as a pair of new drives the same size that I bought to transition from mirrored pairs to a four-disk RAID5 array about 16 months earlier. Like, god damn it was expensive.
A new disk would have cost me almost as much as all four disks did, originally.