<prompt> Human: I dont know if this is the right place to post this but why do gas stations , grocery stores, etc. Offer you cash back when you pay with a card. It makes sense at a restaurant so you can leave a top but Im not sure why this is an option elsewhere. Is there a financial benefit to the company?  <response>: All debit transactions can offer cashback.It costs them nothing extra, but you have a happier customer. 