The document describes different types of market structures: perfect competition where many buyers and sellers transact standardized products at a single market price; monopoly where a single seller dominates the market and can set a profit-maximizing price; monopolistic competition where many firms offer similar but differentiated products giving them some monopolistic power; and oligopoly where a small number of large firms control the market and can influence prices. It also mentions factors like costs of production, customer demand in response to price, distribution costs, and existing market competition that influence business pricing and promotion decisions.