Western Digital Red 4TB NAS HDD for $180 + $15 USD Delivered ~ $217 AUD.
Note this is a NAS drive so it is more expensive than normal 4TB hard drives due to differences in hardware level error handling.
Cheapest on StaticIce seems to be $237 ex credit card surcharges.
I only have one problem with this.
Warranty is my biggest concern. WD have no office in Australia and its not like you can simply return it without cost back to amazon.
It comes down to is $20 really worth saving compared to buying it here and being covered?
Great price but is it enough to jump on. For me personally no, but still cheap.