WD Elements 6TB Prime Day deal.
Lowest ever as far as I know, plus cashback. Better value ($24.31 per TB) as compared to the 10TB deal ($25.85 per TB).
From description
Fast data transfers
High-capacity add-on storage
Plug-and-play ready for Windows PCs
WD quality inside and out
2-year manufacturer's limited warranty
Aren't you better off spending ~$100 more for almost double the storage?
Referring to this