Interesting and very useful; however, I would recommend removing Desktop and Laptop drives since it is not recommended using them with Free/True NAS. Also, I'm surprised to not see any SSD or NVM. At the end it might worth it to make this collective such as using a Google Drive, so we could help you to maintain it.
Really helpful. Especially since you give access to the raw data and I can input energy costs in my area as well as a sale price for a specific drive and see the updated results live and make an informed decision.
The next step would be to create a script to scrape a few dozen ecommerce sites with all the relevant model numbers and have the sheet get updated in near realtime... (Please don't ask me for help,, I'm a big talker.. I mean thinker.. but that would be beyond me).