Just noticed Cashrewards are now offering 8% Cashback for purchases through Sony Australia site.
Example:
Sony A7III Body only - $2999 + Bonus $400 Cashback (in the form of EFTPOS gift card) + Free Delivery + 8% Cashback makes it $2359.08 delivered.
You can also get Sony to price match any other australian store, making the item further cheaper.
Don't mean to poo poo your deal but the Sony A7III has been way cheaper in the past. See here.