Travel destinations us for The market is a system regulated by prices. Here, Smith explains the theory of exchange value, and, more important, the connection between market price and social coordination. In 21st-century terms, Smith presents a vision of the economy as a self-organizing system cybernetically controlled by feedback from prices. The central claim is that supply tends to suit itself to effectual demand. Smith defines natural price as the cost of bringing a good to market. This cost consists of wages, rents, and profits, all at their natural or normal level. Market price is what the good actually sells for. Travel destinations us 2016.