I noticed last night while pricing drives for backing up my NAS system that the 4TB NAS-grade hard drives which cost me $84.99 each in Dec 2020, today cost $249.99.
Almost 3x the price for the identical model: WD RedPlus 4TB 5400rpm WD40EFRX
It might be some of that's due to unusual demand for an older model of drive in limited supply, but even a newer similar 4TB NAS drive from WD is $199.99, 2.35x the 2020 price.
It's not a literal necessity, like high food prices, but damn.