Economics
Marginal Revenue
Quick fact
Under perfect competition, marginal revenue equals the market price. But for a monopoly, marginal revenue is always less than the price—a key reason why monopolies produce less than competitive firms.
Why this is interesting
Imagine you run a lemonade stand. When you sell one more cup, does that cup always add the same amount to your total revenue? Often it doesn't—and that's where marginal revenue comes in.