Thanks to hamza23's post I popped over to my local Target and found these are also further discounted from when they were $20 before.
They're not showing up in the Clearance pages or searches and can only be found if you use the direct link. Well, in the time it took me to write up this post they pulled the link and it can't be seen online any longer. I've uploaded two screenies from my phone showing the top of the page as it was before.
They're also click & collect only, no online orders available. I saw at least 8 in stock in Launceston.
These are the older versions with no USB-C and are 2.4A only.
Slim design, rubber coating.
Built-in 12000mAh rechargeable lithium polymer battery.
Compatible with these devices: mobile, phone, tablet, MP3 player, camera.
Four LED power indicators.
Dual output: charge 2 devices at once.
Includes USB to Micro USB cable.
Output: 5V-1A / 5V-2.4A.
Self charging time: 8-9 hours.