At the pump it's obvious because you're offered a different price for paper or plastic.
But what shoppers don't know is that many stores and services discount for cash too.
Finance Expert and Author Farnoosh Torabi says if a customer ask, many times they shall receive.
"You have nothing to lose by asking for a cash discount.. don't feel shy you never know when it's gonna work," he said.
Merchants explained that ringing up with cash makes it King, because a credit card swipe costs the merchant 2 to 5 percent more.
Time is money and saving time is worth a discount even with a professional service.
CONNECT WITH NINA PINEDA AND 7 ON YOUR SIDE