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MARKET STRUCTURE: The manner in which a market is organized, based largely on the number of firms in the industry. The four basic market structure models are: perfect competition, monopoly, monopolistic competition, and oligopoly. The primary difference between each is the number of firms on the supply side of a market. Both perfect competition and monopolistic competition have a large number of relatively small firms selling output. Oligopoly has a small number of relatively large firms. And monopoly has a single firm.

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WHOLESALE PRICE INDEX

An index of the prices paid by retail stores for the products they ultimately resell to consumers. The Wholesale Price Index (WPI) was the forerunner of the modern Producer Price Index (PPI) and was discontinued in 1978. Other noted price indexes used to track economic activity are the Consumer Price Index (CPI) and the GDP price deflator.

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Today, you are likely to spend a great deal of time searching for rummage sales seeking to buy either a birthday greeting card for your mother that doesn't look like a greeting card or a handcrafted spice rack. Be on the lookout for vindictive digital clocks with revenge on their minds.
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A lump of pure gold the size of a matchbox can be flattened into a sheet the size of a tennis court!
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