High-end, large capacity NAS drive - and no need to shuck. Works out to $29.72 per TB which for a drive like this seems very good. Looks to be $800-$900 locally.
OWC is a reputable US based retailer specialising in Mac products. Seems like an odd item for them to stock, admittedly…
Update: GST was left out of the deal title, it has been added in. GST is calculated as 10% of $379.10 US, (US$417 total). GST exemptions apply if you are a business and can provide an ABN on the checkout page.