Esoko http://www.esoko.com/ http://www.esoko.com/ is a good example. I've seen these in action in various places and I've been skeptical about how much value t

Esoko http://www.esoko.com/ http://www.esoko.com/ is a good example. I've seen these in action in various places and I've been skeptical about how much value they actually bring to the table. Price information actually disperses pretty quickly, and for most commodities prices aren't that volatile. In the markets where wholesalers sell vegetables, you see people getting screwed by the middlemen, but basically it's because these middlemen control the marketplace, not because of lack of information.