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ENTRY BARRIER: An institutional, government, technological, or economic restriction on the entry of firms into a market or industry. The four primary barriers to entry are: resource ownership, patents and copyrights, government restrictions, and start-up costs. Barriers to entry are a key reason for market control and the inefficiency that this generates. In particular, monopoly, oligopoly, monopsony, and oligopsony often owe their market control to assorted barriers to entry. By way of contrast, perfect competition, monopolistic competition, and monopsonistic competition have few if any barriers to entry and thus little or no market control.

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CONSUMER PRICE INDEX FOR ALL URBAN CONSUMERS

An index of prices of goods and services typically purchased by urban consumers. The Consumer Price Index for All Urban Consumers (CPI-U) is the official name for the Consumer Price Index (CPI) commonly reported in the media. It is compiled and published monthly by the Bureau of Labor Statistics (BLS), using price data obtained from an elaborate survey of 25,000 retail outlets and quantity data generated by the Consumer Expenditures Survey. The CPI-U is so designated to differentiate it from the Consumer Price Index for Urban Wage Earners and Clerical Workers (CPI-W).

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Today, you are likely to spend a great deal of time at the confiscated property police auction seeking to buy either an AC adapter for your CD player or storage boxes for your family photos. Be on the lookout for crowded shopping malls.
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The portion of aggregate output U.S. citizens pay in taxes (30%) is less than the other six leading industrialized nations -- Britain, Canada, France, Germany, Italy, or Japan.
"As the births of living creatures at first are ill-shapen, so are all innovations, which are the births of time. "

-- Sir Francis Bacon, philosopher

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