Short-selling is accomplished by borrowing securities from a broker and selling those securities. At a later time, the loan is repaid by buying securities on the open market and returning them to the broker. The seller speculates that the stock's market price will decline.

The retail method of inventory estimation applies a cost-retail ratio to the ending inventory at retail to determine ending inventory at cost For example, a popular method calculates the ratio as goods available for sale at cost divided by goods available at retail, with markups but not markdowns included in the calculation of the retail amount. Normal inventory is subtracted from the retail amount of goods available because are not available. However, abnormal amounts of theft, etc., are removed from the cost and retail amounts. The reason for the difference in treatment is that normal but not abnormal inventory losses are anticipated and included in the selling retail value). Accordingly, failure to account for normal inventory shrinkage has no effect on the calculate cost-retail ratio but overstates ending inventory at retail.

Tariffs lead to higher prices on imported products. Similarly, the imposition of quotas leads to higher prices through an artificial limitation on supply.

During the maturity} stage, competition is at its greatest and costs are at their lowest.
Moreover, entities are engaged in competitive price-cutting measures, resulting in some of the lowest prices seen during a product's life cycle.