Buyers want as much as possible at the lowest price
Sellers, however, want to sell their products at the highest price they can get
Markets bring buyers and sellers together
Generally, if prices are too high, sellers can't sell all their goods, so they drop prices
On the other hand, if prices are too low, buyers can't get all they want, so prices are driven up
Prices in markets adjust to reflect buyer preferences and the value of resources used in production.