You’re missing the current state of the art 22 TB and 24 TB (announced late October), that’s why your graph looks the way it does.
No one buys at the full price unless they absolutely have to.
Interesting how prices different per region. Here in Germany, its mostly 14~20GB drives that are the cheapest, and 12~1TB are not worth buying.
https://geizhals.de/?cat=hde7s&xf=3772_3.5
Ignore the first SAS one, that is one seller on Amazon.
And second hand HDDs are even worse priced on places like ebay. To the point there is little reason to even look at second hand drives. Same applies to a lot of PC hardware, that tends to be more expensive second hand on ebay then brand new from stores.
Yeah but what do you do with a 14 GB Hard drive? Download a few movies in 480p?
Data Hoarder
We are digital librarians. Among us are represented the various reasons to keep data -- legal requirements, competitive requirements, uncertainty of permanence of cloud services, distaste for transmitting your data externally (e.g. government or corporate espionage), cultural and familial archivists, internet collapse preppers, and people who do it themselves so they're sure it's done right. Everyone has their reasons for curating the data they have decided to keep (either forever or For A Damn Long Time (tm) ). Along the way we have sought out like-minded individuals to exchange strategies, war stories, and cautionary tales of failures.