I think you're bang on. A lot of the vendors one sees at a farmers' market—not here in Ottawa or Toronto's St. Lawrence—are part-time farmers. They hold day jobs and they're tilling the soil nicely on weekends and bringing their product to market. The larger farmer—I think of Bert Andrews at Milton, for example, who sells at ten farmers' markets, but he has Mexicans working in the fields; he has staff he's trained. He goes to ten markets in one week.
On April 4th, 2012. See this statement in context.