Noticed this on my CommBank rewards section. Decent 10% cashback if you're looking to spend at TheGoodGuys anyway. Quite likely targeted.
Pay with your eligible Commbank debit or credit MasterCard or StepPay and tap or select credit
Automatically get paid into your account within 14 business days
Rewards can only be claimed once
Where is the section? May be only "Available to eligible Mastercard® cardholders in the CommBank app."