Typically fruit wise we buy a big family sized bag of apples for lunch boxes, some loose bananas (I like them because the kids love them as a snack and love banana bread so they're never wasted) and maybe some frozen berries from time to time. I then have a look at whatever fruit they have on offer because it's nice for the kids to try different things.
Vegetable wise we get a couple of heads of normal brocolli, it's less than 50p per head, a kg bag or two of their basic carrots (kids love them raw as a snack), a 25kg bag of potatoes for £8 from the local farmer, healthier if you bake them and eat the skins, leeks, salad veg like lettuce and tomatoes and cucumber. I like always having salad veg because even in the winter. It can be a healthy addition to dishes like fajitas and sandwiches. Really now in winter though the focus is on soups, stews, curries and casseroles, so although none of us are keen on boiled carrots we love them in a stew or cooked in with them pot roast. Plenty of root veg can be bunged in these dishes and served with mash and a side of brocolli.
I work 3 days a week and often don't feel like cooking elaborate meals on those days. If I don't have something batch cooked in the freezer I would rely more heavily upon frozen peas, tinned beans/baked beans (recently discovered kids love mixed bean salad, wills this over the butter beans
), tinned sweet corn and salad.
Tinned tomatoes and tomato concentrate are very good for you, and I'll sometimes make up a big pot of tomato pasta sauce with loads of carrots, onions, mushrooms, courgettes, garlic etc grated into it.
You can get a tasty soup recipe for nearly any veg no matter how cheap.
We buy from Sainsbury's because we live in NI and there is no Aldi here. It is a bit more expensive than asda (I think) but I think the quality of their fresh fruit and veg is slightly higher. We have a delivery pass that works out very very cheaply and I can sit at home and have a proper look at price per kg. I'd love to shop more locally, but with 3 kids including a toddler at home, a dog and working P/T I find it hard to get the time.