For this farmer market site still under development, the vendors can choose to participate in the site at 5 different levels from a free listing to a full blown mail order site that takes credit cards. Terryfic.com owns the site, and the vendors pay a monthly fees ranging from $10 - $40, so they get a web presence without a major investment... or even a minor investment, for that matter.
This site model is ideal for any cooperative marketplace where the location is a destination; such as craft cooperatives, antiques cooperatives, or even a shopping center. It allows everyone to have a presence for a very reasonable cost. All listed inventory items are seachable as a whole. The vendors manage their own content (which is how the price can be so low).