8. Kinds of Market Structure Two Few Many Many One One Many Seller Number No No No Yes No No No Buyer Entry Barriers Many Many Many One Many Many Many Buyer Numbers Yes Yes No No Yes Yes No Seller Entry Barriers Homogeneous or Differentiated Homogeneous or Differentiated Differentiated Homogeneous Differentiated Homogeneous Homogeneous Product type Price Types of Market Uniform Monopoly (Pure) Uniform Perfect Competition Lowest possible price Monopsony Differentiated Monopoly (Discriminating) High Duopoly High Oligopoly Differentiated Monopolistic Competition