A coupon sticker is a small adhesive label or tag that contains a discount or special offer for a product or service. These stickers are often found on the packaging or in-store displays of items and can be peeled off and redeemed at the time of purchase. They are a popular marketing tool used by businesses to attract customers and promote their products. Coupon stickers can range from a percentage off the total price to a free item or service, making them a great way for consumers to save money while trying out new products. They are also commonly used in online shopping, where they can be entered at checkout to receive a discount. Coupon stickers are a convenient and cost-effective way for both businesses and consumers to benefit from discounts and promotions.