Chanel shoes, cheaper or more expensive in Europe?

  1. I'm going to France next week (my first time) and I was advised to wear flats and sneakers (:crybaby:). If I have to wear flats, I'd rather get something like Chanel, but I don't know if I should buy them in the US or get them in France? I hear that b/c of the exchange rates, I may pay more for them over there.
    What do you suggest?
    TIA