Sale by number refers to a marketing strategy in which products or services are sold based on a predetermined numerical goal or target. This approach involves setting a specific number of items to be sold within a given time frame, often with the use of discounts, promotions, or other incentives to entice customers to make a purchase. The success of a sale by number campaign is measured by the number of items sold, rather than the overall revenue generated. This method is commonly used by businesses to drive sales and increase customer engagement, as it creates a sense of urgency and competition among consumers. However, it can also lead to a focus on quantity over quality, and may not always result in long-term customer loyalty.