How do people react to a change in the price of an item?

People typically react to a change in the price of an item through adjustments in their purchasing behavior. When prices rise, consumers may buy less of the item, seek alternatives, or delay purchases, reflecting the law of demand. Conversely, if prices decrease, they may buy more or stock up on the item. These reactions can vary depending on factors such as the item's necessity, availability of substitutes, and individual financial situations.