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PREDATORY PRICING: The process in which a firm with market control reduces prices below average total cost with the goal of forcing competitors into bankruptcy. This practice is most commonly undertaken by oligopoly firms seeking to expand their market shares and gain greater market control. Predatory price has been outlawed by antitrust laws, but it can be difficult to prove, and is thus likely exists more than most people think.

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COMPLEMENT-IN-CONSUMPTION: One of two goods that are consumed together to provide satisfaction -- that is, the goods are used jointly to satisfy wants and needs. A complement good is one of two alternatives falling within the other prices determinant of demand. The other is a substitute good. An increase in the price of one complement good causes a decrease in demand for the other. A complement good has a negative cross price elasticity. When the terms complements or complement goods are used, they typically means complement-in-consumption (compare this with complement-in-production). Examples of complement goods are golf clubs and golf balls; hamburgers and french fries; and cars and gasoline. In each case, the two goods "go together." People seldom use or consume one without the other.

     See also | complement | demand | consumption | demand curve | other prices | demand shock | demand determinants | cross elasticity of demand | complement-in-production |


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COMPLEMENT-IN-CONSUMPTION, AmosWEB GLOSS*arama, http://www.AmosWEB.com, AmosWEB LLC, 2000-2026. [Accessed: January 20, 2026].


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MARGINAL COST AND LAW OF DIMINISHING MARGINAL RETURNS

Decreasing then increasing marginal cost, reflected by a U-shaped marginal cost curve, is the result of increasing then decreasing marginal returns. In particular the decreasing marginal returns is caused by the law of diminishing marginal returns. As such, the law of diminishing marginal returns affects not only the short-run production of a firm but also the cost of short-run production. This translates into a positively-sloped supply curve for profit-maximizing competitive firms.

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