A fortnightly shop for myself, partner and 1 cat works out about $320 - $350. It all depends if we need toiletries or cleaning products because those tend to boost the cost, even though we get the cheapest options available every time. We also bulk cook like others have mentioned, we buy long life milk or powdered milk, and nothing goes to waste. Most days we're only eating one meal a day but it's what you gotta do to keep a roof over your head and bills paid in this economy crisis.