[HDD] Seagate BarraCuda 8TB Internal Hard Drive HDD – 3.5 Inch Sata 6 Gb/s 5400 RPM 256MB Cache ($186 - $36 = $150) [Amazon] ($18.75/TB)

Smr

For Hard disks I'd recommend waiting for a under $20/TB for a disk 10GB or above in capacity as generally those aren't SMR. SSDs are decently cheap these days.

(For context: shingled magnetic recording aka SMR is a technology where magnetic data plates are partially stacked on top of each other, hence the name. Reading generally is fine, but writing to memory in this configuration takes longer. Suitable for media libraries and occasional backups, not good for intensive games, video editing, or frequently updating redundant storage. And definitely not to have your OS installed on it.)