This is so not true.
Houses and cars are cheaper in Australia than in Singapore. There is no so call hawker food in Australia comparable to Singapore prices. But eating out in Australia is not always more expensive than in Singapore. Of cos prata, Yong Tau Foo, etc are more expensive in Australia than in Singapore.
Public transport, depending on which city/state. It's 50 cents in South East Queensland. Victoria will make public transport free for under 18s in 2026.
Public health is generally cheaper in Australia compared to Australia.
Free flu vaccines for Queenslanders.
Friends did IVF in Australia for less than A$2k.
Potato chips, snacks, also cheaper in Australia than in Singapore.