£30-40, pregnant me, shift working dh, 2 yr old & a 1 yr old;
I batch cook twice a week (eg 1kg of mince, frozen onions, peppers, garlic, peas 2 tins of kidney beans, 2 tins chopped toms & half a tube of tomato paste & herbs/spices for chili con crane) and that will do (with rice or potatoes) for 6 meals (eg 3 evenings for dh & me and then dh having it 3 times for lunch at work, but it's all rotated/frozen etc so we never have the same meal more than twice in a row).
Usual week for the ds's and me is;
Breakfast; marmite on toast (4 slices in total) a banana smoothie (3 bananas, 1pint full fat milk, teaspoon honey & a handful of frozen berries)
Lunch; fish fingers, beans & scrambled egg (2 fingers each, a tin of beans & an egg each) and yogurt (big tub of lidl Greek full fat stuff)
snack; homemade cereal bar or a couple of biscuits & a serving of fruit (usually melon of some sort)
dinner; batched cooked whatever (tonight it's chicken, spinach & pesto pasta).
Most of the veg is frozen, I don't buy expensive fresh fruit like blueberries unless they're on offer/at the market (supermarket own brand frozen berry mix mostly), although We always have at least three fresh fruits in, but usually tee long lasting stuff like apples & oranges).
Unless we're having sandwiches i buy reduced bread & freeze it as we eat a lot of toast!
It's mostly shopping seasonally, little bit of shopping around & meal planning....and paying no attention to dates (aside from with meat)!