One way is the moment you give it the credit card it adjusts prices and tells you "You saved $$$", and shows the new total "Approve/Deny". > When the terminal

One way is the moment you give it the credit card it adjusts prices and tells you "You saved $$$", and shows the new total "Approve/Deny". > When the terminal is ready to read your credit card, it has a total 'in mind' already at every place I've ever shopped. Only the cheap ones. At Costco I put in and remove my cedit card before they scan anything at all, then when they are done I tell them "already entered it". And the transaction goes through. It's way faster than waiting for the total. I'm actually annoyed when I go to a store that makes me wait till the total is ready - I'd rather enter the card while the clerk is ringing up my items, and have my hands free and ready to go the second they scan the last time.