And, since marketing is now easily done at a grocery store, why should these markets still thrive? All I can do is give you some assumptions based on my own town's farm market...held every Saturday morning from early May through mid-October. First and foremost, I'd say this: it's not just about what you buy.
It's about the story that builds while you're there.
It's about the vendor who says. "That birdhouse gourd? If you want to come by the farm store, we have ones already dried, ready to drill the bird hole and paint. Don't buy these, they're too fresh, and you'll have to wait to use them."
It's about the booth you think offers brownies, but then realize from the aroma you've actually come upon hand-made soaps, and the vendor who leaves it to you to figure out the difference.
It's about learning who made the cupcakes. Not someone's apron-wearing grandma, but these guys...although the apron is a constant.
It's about consumers...