Anyone with experience moving back from London to Melbourne?

Hi all I am a 36 year old aussie from melbourne whose been in London for close to ten years now. I make roughly 130k aud but cannot get ahead here at all - saving and investing but unable to buy property - flats start out at 350k pounds at least...

With 100k aud saved up , what could I afford in melbourne? How does it work - do banks tend to loan the same 4.5 times salary as here in the uk?