Similarly, when the price is below p*, the quantity supplied qs is less than the quantity demanded qd. This causes some buyers to fail to find goods, leading to higher asking prices and higher bid prices by buyers. The tendency for the price to rise is illustrated with the arrows pointing up. The only price which doesn’t lead to price changes is p*, the equilibrium price in which the quantity supplied equals the quantity demanded. The logic of equilibrium in supply and demand is played out daily in markets all over the world, from stock, bond.