A sale at a loss refers to the act of selling a product or service at a price that is lower than the cost incurred to acquire or produce it. This can occur for various reasons, such as to clear out excess inventory, attract customers, or compete with other businesses. While it may result in a financial loss for the seller, it can also benefit consumers by offering them products at a discounted price. However, frequent sales at a loss can be detrimental to a business’s profitability and sustainability.