I found a local shop which sells refurbished and recertified HDDs for a really good price. Some are refurbished, some are recertified, it’s not both at the same time.
Do you have any experience with them? The shop gives a standard one year warranty with them.
Lots of places play loosely with the terminology, but in general:
Refurbished: they wipes the dust off
Recertified: had an issue, was sent back to manufacturer who fixed it and checked everything else.
Past advice was always buy new, but drives last much longer than they used to. And lots of business replace to be safe when a drive could last another decade just fine.