When I was traveling in Mexico, it drove me nuts that even though I was signed in, Google Flights switched my currency from dollars to pesos every single time I opened a new tab! I think they really don't care.

You know what's even more annoying? Google Maps app on the iPhone uses the local currency for hotels and it doesn't let you change it at all.

Oh, "local" as defined by your IP too, so enjoy your VPNs.

The only solution is using the website instead, it has a currency dropdown.

This is super frustrating when you travel a lot. You can change it back to your preferred currency, but it doesn't really stick.

I think they rely on ip for a lot of stuff they shouldn't. Getting a local esim switches me to km until I switch back to my old one. Have no idea about Australia.

Edit: after typing this realized this isn't ip, its provider. That maybe does make sense to cue off of.