I spend about $130-$150 a week for two adults and two 4 year olds.
It includes 4 or 5 nights worth of meat, veg, fruit, salad stuff, baking needs, toiletries and items for the boys' at daycare. (All of their carers have commented to me that they eat A LOT).
I try and buy as little as we can get away with, because it is such a fortune. I'm really not looking forward to when they're teenagers- I'm worried that they eat a lot now!
Some weeks I will spend just under $100, and others I have blown out to $170, it just depends on what we need each week.
This is all done at Coles.