These drives are shuckable (can be removed from case) and seem to have good drives inside suitable for NAS. May be issues with 3.3v on older machines (only if shucking). See here for a video on solutions for that.
Not the best prices out there, but decent if you need a drive now.
8tb – $129.99 – $16.25/tb – https://www.bestbuy.com/site/wd-e…Id=6425302
12tb – $189.99 – $15.83/tb – https://www.bestbuy.com/site/wd-e…Id=6364259
14tb – $219.99 – $15.71/tb – https://www.bestbuy.com/site/wd-e…Id=6425303
Here is an older Reddit guide for all things Easystore.