From early Autumn to late Spring, we always eat soup for lunch, usually followed by some cheese, charcuterie, etc; and fruit. It doesn't need thinking about, and is quick, easy, cheap, and delicious.
How lucky we are in the UK to have wonderful vegetables on offer, and at crazy low prices.
I recently bought a 2.5 kilo bag of Potatoes for under £1, and both a Cauliflower and a Savoy Cabbage for just over 50p each. If farmers are having difficulty finding 'pickers'; it certainly doesn't show in the shops.
As long as one has a good Chicken stock from the Sunday Roast, you have all the ingredients for a weeks' really tasty, and nourishing soup for just a few £'s. A few store-cupboard herbs and spices are always on hand to enhance the flavour, if needed.
I am shocked to hear people say they can't afford to eat healthily, so they are forced to visit McThingy, or Greggs, or the Chippy.
These people don't need more money, they need re-educating. Even the preparation of food can be fun if approached correctly. It's certainly far less expensive to make healthy foods than to eat Fish-n-Chips or Burgers every night.