Found this when I was at Costco Marsden Park. Seems like a decent price for a reasonably(?) sized air fryer. I suspect this is available across all costco stores that have stock.
Don't know what the quality is like but I suspect it would be better than the Kogan one we had once upon a time where a nut fell off something.
https://www.ozbargain.com.au/node/755723
So it looks like things are indeed $10 cheaper in store vs online?