Originally Posted by
uncertaintraveler
Wouldn't you want to pay in Euros?
Paying in Dollars would mean the store did the Euro-to-Dollar conversion for you (at their own rate, which is likely to not be a very good one); Paying in Euros would mean you pay in the store's home currency at the intra-bank rate (whether through the credit card company or the ATM), no?
Many (if not most) credit cards charge an 'international transaction fee' of 1-3% when purchasing in a foreign currency. Choosing to pay in dollars will avoid incurring that fee.