Will Apple honour the warranty with these if something goes wrong? I'm not willing to go with Kogans warranty, as it'll probably stink and not be like Apples replacement.
I'm not talking about the marketplace refurb ones, these appear to be directly imported ones, I'm guesing from HK?

Apple will honour the one-year warranty no different to a visitor from abroad going to an Apple Store here for support with a hardware issue. My UK iPhone was repaired for a screen issue a few years ago and my UK AirPods Pro were replaced due to the sound issue program, both at Apple Store Sydney CBD.
Anecdotally, you are less likely to get a straight swap on the spot with a new unit though, and will have to send it off to be repaired taking a few days.
You will still be covered under ACL guarantee directly with Kogan, as the seller, but Apple do not have to entertain you at all.
I haven’t checked, but it’s highly unlikely you’re saving enough money to warrant taking the risk with Kogan and their awful support.