Also, I don’t think people have realized how much farmers markets now suffer from “dropshippers taking over Etsy” syndrome. Unless it’s a stand selling one or two specific things from a named farm or local producer, it’s likely you’re getting a lot of the same stuff that goes to the grocery stores, just at a markup.
Direct-from-farm delivery boxes are a better bet, at least the mainstay ones, but they’re certainly more expensive and the variety is more obviously seasonal (as you would expect).
Neither of these is a solution to nutrition at scale. It’s difficult to balance the economies of scale that consolidated distribution brings against the corruption that comes along with increased supplier leverage. Monopsony is just as pernicious as Monopoly (and they tend to feed each other, with large grocery and restaurant chains preferring large distributors).
If your "farmer's market" is not selling things from a named farm or local producer, it's not a farmer's market, it's just a market.