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TIE-IN SALE: A type of sale in which consumers can buy one good only if they purchase another good as well. For example, if your grocery store sells you a bag of tea with the condition that you buy a pound of sugar, that would be a tie-in sale. Because they allow a monopoly to increase its profit over what it could make by selling the two goods separately at constant prices, tie-in sales can be used to price discriminate. However, it is important to realize that there are other reasons for tie-in sales other than price discrimination, such as to increase efficiency. For example, when we buy a car, it comes as a package of several goods (tires, engine, etc), which would be very difficult (and inefficient) for consumers to assemble if they were bought separately.

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BALANCE ON MERCHANDISE TRADE

A subset of the balance of payments current account that records the difference between the payments received for exports of goods to other nations and the payments made for the imports of goods from other nations. The goods included are physical or tangible goods, but not intangible services. The balance on merchandise trade is thus appropriately divided into merchandise exported and merchandise imported. Two other subsets of the current account include the balance on services and unilateral transfers. The commonly termed balance of trade is the sum of the balance on merchandise trade and the balance on services.

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Today, you are likely to spend a great deal of time looking for the new strip mall out on the highway hoping to buy either a flower arrangement with a lot of roses for your grandmother or a wall poster commemorating the first day of winter. Be on the lookout for crowded shopping malls.
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The portrait on the quarter is a more accurate likeness of George Washington than that on the dollar bill.
"Ships are safe in harbor. But that is not what ships are for."

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