Simply purchase the camera between 14th-20th Feb and redeem cashback online from the Nikon website (https://mynikonlife.com.au/cash-back/). Australian Camera Sales in an authorised Australian Nikon Retailer.
Nikon Z Series Products and Prices (before cashback):
($300 Cashback on Z 6 Cameras)
Nikon Z 6 Full Frame Mirrorless Camera (Body only) - $3199
Nikon Z 6 Full Frame Mirrorless Camera with Mount Adapter FTZ -$3499
Nikon Z 6 Full Frame Mirrorless Camera with NIKKOR Z 24-70MM F/4 S Lens - $3996
($500 Cashback on Z 7 Cameras)
Nikon Z 7 Full Frame Mirrorless Camera (Body only) - $5199
Nikon Z 7 Full Frame Mirrorless Camera with Mount Adapter FTZ - $4999
Nikon Z 6 Full Frame Mirrorless Camera with NIKKOR Z 24-70MM F/4 S Lens - $5880
The Z7 price is ridiculous even after cashback consider the A7R3 could be found for ~$3500 recently. What a rip off