You can plot your marginal revenue curve on the same graph as your demand curve. For 11 sales, the demand curve shows a price of $4.95 – but the marginal revenue from that 11th sale is $4.45.

A buyer's monopoly, or monopsony, is a market situation where there is only one buyer of a good, service, or factor of production.

A discriminating monopoly is a market-dominating company that charges different prices to different consumers. Targeting buyers by segment can mean greater revenue.

Demand is generally considered to slope downward: at higher prices, consumers buy less. The point at which the two curves intersect represents the market-clearing price—the price at which demand and ...