The market situation is only one manufacturer or seller. While shoppers find products more difficult to replace the monopoly. Meanwhile Other vendors simply can not match it to enter production. It will be sidelined or a barrier to market entry. Often called a monopoly in this sense that pure monopoly or absolute monopoly in the market demand, manufacturers have to face is that demand this type of market. Monopolist will truly have the power to determine the price or quantity of products on the market, either fully. It will determine both simultaneously is not.