expired Western Digital 8TB 5400 RPM Red NAS Hard Drive WD80EFAX $296.18 Delivered @ Amazon US via AU
Cheapest it's ever been according to the three wise camels: https://au.camelcamelcamel.com/Western-Digital-5400-Drive-WD...
Don't forget your cash-back! Shopback, Cashrewards, GoCashback etc.
Edit - Apologies it's appears the cashback from the three companies is the same at 4.5%. Brings the total down to ~$283.