These have been popular in the past (e.g. this deal). Some stores have some, some have none. I picked one up today, and other stores were showing stock. The drives appear to be shuckable. Edit: HollyKryten says the drive inside is actually a Seagate Barracuda Compute 4TB 5400RPM 3.5" HDD.

Also, if you're an OzBargainer that is affected by the bushfires right now - and many of us are - then I hope you are doing OK.