Fruits are also available but usually tend to be more expensive and are usually considered a treat for people on limited budgets. Me not listing them was part of keeping to the usual budget shopping lists recommend for people with limited income. Unless you are further being a pedant and insisting that tomatoes are fruits and not vegetables.

And while I am fortunate enough to live in the continental US, I mostly buy what is in season and local and therefore on sale for relatively cheap. And anywhere where that isn't available, frozen veggies are available, often for even cheaper and with no difference in nutritional value or content. If you don't have a fridge/freezer, dried veggies are also available in most markets (dried peppers especially) and canned goods are far better for you now than they ever have been, with only marginal decreases in nutritional value.

Where do you live that absolutely no vegetables are available in any form for a dollar a can or five dollars for a family pack that would make a couple dozen meals for a family of four?

(Edit: Or, if not in the US, where you can't even buy local produce, unless you are in an area where there is famine. In which case you may object to the fact that almost half our farmable land is used to grow crops to feed to animals instead of being used to grow more food for humans.)