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TIE-IN SALE: A type of sale in which consumers can buy one good only if they purchase another good as well. For example, if your grocery store sells you a bag of tea with the condition that you buy a pound of sugar, that would be a tie-in sale. Because they allow a monopoly to increase its profit over what it could make by selling the two goods separately at constant prices, tie-in sales can be used to price discriminate. However, it is important to realize that there are other reasons for tie-in sales other than price discrimination, such as to increase efficiency. For example, when we buy a car, it comes as a package of several goods (tires, engine, etc), which would be very difficult (and inefficient) for consumers to assemble if they were bought separately.
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Lesson 22: Factor Supply | Unit 3: Factor Supply
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Page: 16 of 25
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Topic:
Supply Curves Times Two
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- Market control on the buying side of factor markets means that firms can face one of two types of supply curves for the factors their employ:
- Perfect Competition:
If we're looking for a buyer with absolutely no market control, then we are looking for perfect competition.
- Monopsony, Oligopsony, and Monopsonistic Competition:
If we're looking for a buyer with market control, then we can choose among monopsony, oligopsony, and monopsonistic competition.
- The relative elasticity of this curve depends, of course, on the market control of the buying firm.
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PERFECT COMPETITION, LONG-RUN ADJUSTMENT A perfectly competitive industry undertakes a two-part adjustment to equilibrium in the long run. One is the adjustment of each perfectly competitive firm to the appropriate factory size that maximizes long-run profit. The other is the entry of firms into the industry or exit of firms out of the industry, to eliminate economic profit or economic loss. The end result of this long-run adjustment is a multi-faceted equilibrium condition that price is equal to marginal cost and average cost (both short run and long run).
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PINK FADFLY
[What's This?]
Today, you are likely to spend a great deal of time at a crowded estate auction hoping to buy either a key chain with a built-in flashlight and panic button or a green and yellow striped sweater vest. Be on the lookout for neighborhood pets, especially belligerent parrots.
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This isn't me! What am I?
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Two and a half gallons of oil are needed to produce one automobile tire.
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"A stumble may prevent a fall. " -- Margaret Thatcher, British prime minister
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PIH
Permanent Income Hypothesis
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