I get where you are coming from but one euro equals one euro......USD rate has nothing to do with that unless you pay in USD...so the $1.25 /Euro is a crap rate yes....I agree ...but you make it sound like a deal....

..or you could just use a CC and tell them to charge in Euro....or just go to the Cole Bay store and pay in dollars

Now that I think about it aren't the Carrefour stores all on the Dutch side. Why in the world would you get euro to shop there....if you do then getting Euro loses you a tad over 10% on every purchase...