Our grocery budget is $150/week for a family of 2 adults + 3kids, one in nappies. We are almost totally additive, preservative and refined sugar free. I meal plan, and make everything myself. It's hard, I wish we had $250/week life would be a lot easier. But we don't so I do the best we can with what we have lucky to live in an area where we have extremely cheap and wonderful fresh produce. We use cheaper cuts of meat, and bulk buy wherever possible.