we are a family of 3, and spend approx $1k on groceries a month. This includes booze and our CSA. I cook nearly entirely vegetarian. I buy organic local milk and eggs, and try to buy organic fruits & veg. We do a Costco shop every 3 or 4 weeks for staples. We live in the Bay Area for whatever it's worth. I'd like to cut our bill to $500 but recognize that maybe challenging. My husband and I work full time with commutes and have a toddler, so I rely on canned beans where I used to use dried.
i love the creative, problem solving side of cooking-- ie the wilting book choy needs to be used and the baby is screaming. So I am wary of having a meal plan.