In addition to what Pierre said, I think that the specific markets that should be targeted are the ones which involve a direct relation between the consumer and the producer. In English, this is called market power. On this kind of market, as soon as the producer and the consumer meet face to face, the producer obtains a premium and the consumer is very glad to pay.
This does not happen so easily in regions with a greater production and a smaller population. You have to move further away. This is a very useful tool for farmers on the local markets.