Sales
        When a store sells goods or services at a cost lower than usual, it is called a sale. Sales last for a limited time. Then the cost is returned to its usual amount. There are many kinds of sales. For example, a "back-to-school sale" is held near the beginning of the school year. A favorite sale among many people is the "buy one, get one free" sale. You buy one thing and get a second one without cost. Another kind of sale is a "going out of business" sale. This is when a store owner tries to sell all the goods in the store before closing the business permanently.