I spent about $100-180 a week for 2 adults, 1 toddler, a dog and 2 cats.
I buy our fruit, veg and eggs from the farmers market and spend $40-50 for enough for a fortnight. We also grow some veg, but we rent and the ground here is rubbish, so it's in tubs so can't grow as much as I would like!
I also try to buy meat and staples on special to keep the freezer and cupboard stocked and usually do one big and one little shop in a fortnight. DH also takes his lunch with him, so the bits for that are in the shop.
While I love living here, it's a tourist town so groceries are unfortunately more expensive.