One of the issues that comes up from time to time is just how much food costs in different parts of Regional Australia. I make this point because food costs vary from area to area depending in part on transport costs. So people who are thinking of leaving the metros know that rents will be cheaper, but also want to know how much more they might have to pay for groceries.
The Australian Government's Grocerychoice site is a useful source here because it provides information on food prices by region.
The first thing that you have to do is to key in your post code or town. Alternatively, you can click on the map. This then gives you prices for baskets of groceries. You can use this to compare food prices between areas.
The site is not perfect, providing information at a broad regional level. However, it is still a useful guide.