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PRICE DISCRIMINATION: Charging different prices to different buyers for the same good. This is an age old practice for suppliers who have achieved some degree of market control, especially those with a monopoly. The reason for price discrimination, of course, is higher profit. To be a successful price discriminator you must be able to do three things--(1) have market control and be a price maker, (2) identify two or more groups that are willing to pay different prices, and (3) keep the buyers in one group from reselling the good to another group. In this way, you will be able to charge each group what they, and they alone, are willing to pay.

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MARGINAL COST AND LAW OF DIMINISHING MARGINAL RETURNS

Decreasing then increasing marginal cost, reflected by a U-shaped marginal cost curve, is the result of increasing then decreasing marginal returns. In particular the decreasing marginal returns is caused by the law of diminishing marginal returns. As such, the law of diminishing marginal returns affects not only the short-run production of a firm but also the cost of short-run production. This translates into a positively-sloped supply curve for profit-maximizing competitive firms.

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Today, you are likely to spend a great deal of time at an auction hoping to buy either an instructional DVD on learning to the play the oboe or a small, foam rubber football. Be on the lookout for gnomes hiding in cypress trees.
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In the early 1900s around 300 automobile companies operated in the United States.
"Do not think a man has done his full duty when he has performed the work assigned him. A man will never rise if he does only this. Promotion comes from exceptional work. "

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