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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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INDIRECT BUSINESS TAXES

The official entry in the National Income and Product Accounts maintained by the Bureau of Economic Analysis for sales taxes. Indirect business taxes are one key difference between national income (the resource cost of production) and gross (and net) domestic product (the market value of production). Indirect business taxes (IBT) is generally less than 10 percent of gross domestic product (7 to 8 percent is common).

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ORANGE REBELOON
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Today, you are likely to spend a great deal of time searching for a specialty store trying to buy either a rechargeable battery for your computer or shoe laces for your snow boots. Be on the lookout for gnomes hiding in cypress trees.
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More money is spent on gardening than on any other hobby.
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