2 Answers

A coupon is also something you use to get money off an item you wish to purchase.

http://en.wikipedia.org/wiki/Coupon

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This article is about a document exchanged in a financial transaction. For other uses, see Coupon (disambiguation).

The examples and perspective in this article deal primarily with the United States and do not represent a worldwide view of the subject. Please improve this article and discuss the issue on the talk page. (December 2010)

Food stuff coupons types I-V for direct laborers and workers in Vietnam, 1976–1986

In marketing, a coupon is a ticket or document that can be exchanged for a financial discount or rebate when purchasing a product.

Customarily, coupons are issued by manufacturers of consumer packaged goods or by retailers, to be used in retail stores as a part of sales promotions. They are often widely distributed through mail, coupon envelopes, magazines, newspapers, the Internet, directly from the retailer, and mobile devices such as cell phones. Since only price conscious consumers are likely to spend the time to claim the savings, coupons function as a form of price discrimination, enabling retailers to offer a lower price only to those consumers who would otherwise go elsewhere. In addition, coupons can also be targeted selectively to regional markets in which price competition is great.

In government, a coupon is a paper certificate used to administer a benefit or permission.