Substitute good

In microeconomics, substitute goods are two goods that can be used for the same purpose by consumers. That is, a consumer perceives both goods as similar or comparable, so that having more of one good causes the consumer to desire less of the other good. Contrary to complementary goods and independent goods, substitute goods may replace each other in use due to changing economic conditions. An example of substitute goods is Coca-Cola and Pepsi; the interchangeable aspect of these goods is due to the similarity of the purpose they serve, i.e. fulfilling customers' desire for a cola-flavored soft drink. These types of substitutes can be referred to as close substitutes. Economic theory describes two goods as being close substitutes if all three following conditions hold: products have the same or similar performance characteristics products have the same or similar occasion for use products are sold in the same geographic area Performance characteristics describe what the product does for the customer; a solution to customers' needs or wants. For example, a beverage would quench a customer's thirst. A product's occasion for use describes when, where and how it is used. For example, orange juice and soft drinks are both beverages but are used by consumers in different occasions (i.e. breakfast vs during the day). Two products are in different geographic market if they are sold in different locations, it is costly to transport the goods or it is costly for consumers to travel to buy the goods. Only if the two products satisfy the three conditions, will they be classified as close substitutes according to economic theory. An example of substitute goods are tea and coffee. These two goods satisfy the three conditions: tea and coffee have similar performance characteristics (they quench a thirst), they both have similar occasions for use...