Sony: 6% Cashback @ Cashrewards

Normally 2%. Maximise this deal by finding the cheapest online price then get Sony to price match, with free delivery for over $200.
E.g.
Sony A7C $2454 @ Digidirect > net $2320 delivered
Sony HTG700 3.1ch Dolby Atmos Soundbar $575+delivery @ Videopro > net $543 delivered
Sony Alpha a7 III $2379 stack with Sony $400 cashback > net $1849 delivered
Try price match Digidirect's warehouse clearance on other Sony products.

CR T&Cs:

Cashback is ineligible on any PlayStation products and accessories.
Employees, Corporate and Commercial Partners of Sony Australia including, but not limited to, Sony X, Alpha Pro Support and Service Centres, areineligible for cashback .
Lay-Bys, purchases from eBay, Amazon, parallel import stores, second hand purchases and other online resellers not authorised by Sony Australia are ineligible for cashback.
Sales made on any PlayStation products and accessories, or any purchases from the PlayStation store, are not eligible for commission.
Creative Pro is non-commissionable.
Use of coupon codes not listed on Cashrewards may invalidate cashback.

How to price match:
1. Log into Sony.
2. Find item.
3. Add item to cart.
4. You should see on the same page "Request a Price Match".
5. Enter you details and the link of the competitor's item.
6. When they approve the price match (within a few hours), you will be notified by email.
7. Go to your cart, it will show the item with the new price.
8. Remember to activate CR before payment.

[EDIT 14/01/21]: Stack with Sony Bonus Cashback promotion (ends 28 February 2021). Qualifying Sony models include: $80: DSCRX100M3; $200: DSCRX100M5A, DSCRX100M6, ZV1, ZV1W, ILCE6400B, ILCE6400LB, ILCE6400LS; $250: DSCRX100M7; $300: DSCRX10M4, ILCE7RM2B; $400: ILCE7M3B; $500: ILCE7RM3B; and $600: ILCE7RM4B.