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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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AVERAGE PROPENSITY TO SAVE

The proportion of household income that is used for saving. The average propensity to save (abbreviated APS) is really nothing more than average saving. Together with the average propensity to consume, it indicates how a given level of income is divided between consumption and saving. A related saving measure is the marginal propensity to save.

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Today, you are likely to spend a great deal of time at a going out of business sale hoping to buy either a flower arrangement for that special day for your mother or a New York Yankees baseball cap. Be on the lookout for defective microphones.
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North Carolina supplied all the domestic gold coined for currency by the U.S. Mint in Philadelphia until 1828.
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