I stumbled on this offer while browsing thru the HP online store. Essentially, if you buy certain printers, you can get cashback up to $200 but if you also buy a full set of ink/toner (so CMYK or C/RGB) in the same transaction, the cashback doubles to up to $400.
The site I linked in this post will have the list of all eligible printers and ink sets plus their cashback amounts. Also, the cashback is via EFT to an account you nominate so no prepaid cards or such things to worry about.
The only thing is that HP themselves do not state which resellers (stores) participate but I do know JB Hifi is advertising this but Officeworks appear do not know (although if you complete the claim form, they come up as a valid reseller).
Cashback claims are due back to HP no later than the 14th of August 2019.
I bought myself an Officejet Pro 8710 for $149 from Officeworks and once they accept the claim, the price goes down to $109 which is pretty good for a printer that can do duplex scanning and printing (hard to find printers that can do duplex scanning for less than $150 or even $200 new).
https://newsthump.com/2016/09/19/man-refused-mortgage-to-rep…