Cashback originally referred to a promotional strategy where a seller agrees to reimburse a portion of the initial purchase price to their customers. Some credit card issuers offer their users a financial return of 0.5% to 1% on their purchases. Similarly, some retailers may credit a percentage of purchases (generally around 5%) to loyalty programs linked to their cards, particularly for their own brand products. Online, cashback platforms have emerged, offering their members refunds ranging from 1% to 5% on a multitude of online stores. Furthermore, the term cashback can also refer to another promotional technique occasionally used in the home appliance sector. In this case, a store agrees to fully reimburse the purchase price of a product after a few years to customers who buy a new one by returning the original product or providing proof of purchase. To learn more about online cashback, see: [link]. For more information on this alternative promotional method, see: [link]. A concrete example of a payment or loyalty card from a brand that includes a cashback system is: [example].