Post-purchase evaluation and satisfaction are important stages in retail consumer behaviour because they determine how consumers assess their shopping decisions after purchasing and using a product or service. Consumer behaviour does not end when the transaction is completed. After buying a product, consumers compare their actual experience with their expectations and form judgments about whether the purchase was satisfactory. These judgments influence future purchases, brand loyalty, word-of-mouth communication, complaints, returns and the overall relationship between consumers and retailers. Post-purchase evaluation refers to the process through which consumers assess the performance and value of a product after purchase. Before purchasing, consumers develop certain expectations based on advertising, product information, previous experiences, recommendations, price, brand reputation and the retailer's promises. After using the product, they compare its actual performance with these expectations. If the product performs as expected or better than expected, the consumer is likely to experience satisfaction. If performance falls below expectations, dissatisfaction may occur. The process can be understood through the concept of expectation-disconfirmation. When actual product performance matches expectations, consumers experience confirmation and are generally satisfied. When performance exceeds expectations, positive disconfirmation occurs, resulting in a higher level of satisfaction and sometimes delight. However, when performance is below expectations, negative disconfirmation occurs, producing dissatisfaction. Thus, satisfaction depends not only on the objective quality of a product but also on the consumer's expectations before purchase. Post-purchase evaluation has several dimensions. Consumers may evaluate product quality, functionality, durability, appearance, reliability, price and value for money. They may also assess the shopping experience, including the behaviour of sales personnel, convenience of payment, availability of information, delivery service, packaging and after-sales support. In modern retailing, consumers also evaluate digital experiences such as website usability, mobile applications, delivery tracking, online customer service and ease of returning products. Therefore, post-purchase evaluation covers both the product itself and the complete retail experience. Satisfaction is a psychological response resulting from the consumer's evaluation of the purchase. A satisfied consumer feels that the purchase decision was appropriate and that the product or service provided adequate value. Satisfaction can be cognitive as well as emotional. Cognitively, the consumer may believe that the product has delivered good quality for its price. Emotionally, the consumer may feel happy, comfortable or confident about the decision. High satisfaction strengthens the consumer's positive attitude towards the product, brand and retailer. An important role of post-purchase satisfaction is the development of repeat purchase behaviour. Consumers generally prefer to reduce the risk and effort involved in future shopping decisions. If a retailer consistently provides satisfactory products and services, consumers develop confidence in that retailer. They may therefore return to the same store or website when they have another purchasing requirement. For example, a consumer who receives good-quality clothing, efficient billing and helpful customer service from a particular retail store is more likely to shop there again. Satisfaction thus contributes to customer retention and repeat purchases. Post-purchase satisfaction also contributes to brand and store loyalty. Loyalty involves more than making a single repeat purchase; it reflects a continuing preference for a particular retailer or brand. Satisfied consumers may become less sensitive to competitors' offers because