I do not have much experience with farmer's markets, so I can not speak as to how good the prices are, but I do remember having a good feeling when I would go to the farmer's market and then see the prices at the grocery store.
The only drawback of this farmer's market (hence the 4 stars) is the parking. If you arrive in the early hours, it isn't hard to find parking. However, during the late morning it can get very crowded.