I bought a Seagate Barracuda Compute 24TB recently (ST24000DM001; Serial number/IMEI: ZXA0L9EX). Yes, I'm aware that the drive isn't really meant for "heavy use", but more as cold storage and for ...
Wiping a drive before selling it is very important. Not just because whoever's going to use it next needs the space, but also because you don't want them snooping through your files after you sold it.