Hee hee. Pam, it is not that they have to set the pumps differently for cash than credit. It is that, if you are paying cash, they will take the extra second to put in a smidge more gas to get it up to an even dollar amount, or a half dollar, for your convenience and theirs. Whereas, if you are paying by credit card, and it stops on 23.87, it's okay - they don't have to dig 13 cents change out, it's on the credit card!