In perfect competition, the price is determined by the market. In a perfectly competitive market, there are many buyers and sellers, and no single buyer or seller can influence the market price. The market price is determined by the interaction of buyers and sellers, based on the forces of supply and demand. The sellers in the market are price-takers, which means that they have to accept the market price for their goods or services, and cannot set their own prices. This is because there are many other sellers in the market who are selling similar goods or services, and buyers can easily switch between sellers if the price is too high. Therefore, in a perfectly competitive market, the price is determined solely by the market forces of supply and demand.