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ENTRY BARRIERS: Institutional, government, technological, or economic restrictions 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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ACCOUNTING PROFIT

The difference between the revenue received by a firm and the explicit accounting cost incurred. This is the profit listed on a firm's balance sheet, appears periodically in the financial sector of the newspaper, and is reported to the Internal Revenue Service for tax purposes. While accounting profit is the "standard" designation of profit used in the business world, economists prefer to use economic profit

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BROWN PRAGMATOX
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Today, you are likely to spend a great deal of time at the confiscated property police auction looking to buy either a how-to book on the art of negotiation or a flower arrangement for your aunt. Be on the lookout for door-to-door salesmen.
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Parker Brothers, the folks who produce the Monopoly board game, prints more Monopoly money each year than real currency printed by the U.S. government.
"People of mediocre ability sometimes achieve outstanding success because they don't know when to quit. "

-- George Allen, U.S. senator

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Commodities and Futures Trading Commission (US)
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