This is a great price for a Western Digital HDD and works out to just over $39 per TB.
I'm currently running 2x 6TB WD Purples (spanned) in my desktop PC for my CCTV system and after 5 years of 24/7 use one has died.
My current setup has 13 cams all recording at 1080p @ 30 FPS, which gives me just under 4 weeks of storage before the footage is overwritten, so this new drive will help to push that out even further.
Wish my hikvision took more than 8tb drives. Upvoted!