A month ago Safeway stores in Colorado changed their policy.
They're now charging customers 10 cents a gallon if they use credit cards to make gasoline purchases.
We heard about it from customers who noticed their 10 cent grocery discounts were wiped out when they used credit cards.
A Safeway spokeswoman told me that customers still earn fuel points. That hasn't changed, it's just their policy for the way you pay.
If you use a debit card or cash, you are not charged 10 cents more a gallon for gas.
I was told that Safeway added the charge because of the rising cost of credit transactions.
Customers were told about the change through signs posted at the gas pumps and notices put in grocery bags.
I also checked with King Soopers and learned it does not charge different prices based on how you pay for gas.
Just remember using credit cards are a convenience for us, but cost merchants who are legally allowed to pass on those expenses to us.