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BARTER EXCHANGE: A method of trading goods, commodities, or services, directly for one another without the use of money. In a barter exchange one good is traded directly for another. This sort of exchange ultimately requires a double coincidence of wants, meaning that each trader has what the other trader wants and wants what the other has. Without a double coincidence of wants the exchange process can become exceedingly complex, requiring a great deal of resources to complete transactions, resources that can not be used for production. In fact, inefficient barter trading was the primary reason that money was invented. With money, more resources can be used for production and fewer are needed for trading. See market.

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MARGINAL COST OF SEARCH

The incremental cost incurred by additional search effort is the marginal cost of search. Marginal cost of search, also termed marginal search cost, is comparable to marginal cost of short-run production analysis. Marginal cost of search increases with an increase in search effort and is represented by the marginal cost of search curve. This is one half of the efficient information search decision. The other is marginal benefit of search.

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Today, you are likely to spend a great deal of time calling an endless list of 800 numbers seeking to buy either a rechargeable battery for your camera or a coffee cup commemorating the first day of spring. Be on the lookout for empty parking spaces that appear to be near the entrance to a store.
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A U.S. dime has 118 groves around its edge, one fewer than a U.S. quarter.
"The way employees treat customers reflects the manner in which they're treated by management. "

-- James Perkins, president, Cornell University

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