That definition has affordability and some amount of processing and convenience inherent in it because of the word "supermarket". So it means that you can't get good food with a reasonable amount of effort, and without needing access to things like large chest freezers or canning equipment.

My guess is that you lived in an area with plenty of produce, close to a farm or something like that. This is my preferred setup as well, but it is a) expensive and b) hard to process and store in the quantities you get. Typically you get tens of pounds of tomatoes one month and nothing the next.