Sony WH-1000XM6B Wireless Noise Cancelling Headphones $585.65 (with 15% off Code, Was $689) + Delivery ($0 C&C) @ The Good Guys

I came across the email from Goodguys which mentioned the 15% discount on exclusive items, tried my luck with the new XM6s and the code worked.

Plus the website mentions 70 bucks worth of store cash, not sure when will the cash be credited (prior Store Cash digital Wallet is a requirement)

Plus, if you're with CBA Yello Gold, you can activate the $20 cashback when you spend 100 or above in TheGoodGuys.