Got this email from my Citibank credit card (I think it should be valid for any of their credit card as per their link):
Use your Points to get credit back for almost anything you buy with your Citi credit card.*
Whether it’s your first flat white in the morning, a cheeky pizza, groceries or a wardrobe refresh you can use your Points to get a credit back, no matter how big or small the purchase.
Receive a $20 JB Hi-Fi eGift Card when you redeem 20,000 Points or more using ‘Pay with Points’ in November 2020.^