Yes my price was wrong it's one way ticket. You may call Air France but not book ticket from Internet always, sometime they do provide better prices than US airlines, especially if you want to fly different cities in Europe. Their rule before was they only charge $50 for the additional flight route within France and around $100 for route to/from other country to France.The price now may change since the weak US$ rate.
I've taken more than 30 flights by Air France before and felt they were much reasonable than UA. Once my first flight was delayed, their stuff was waiting at the gate of the plane to pick me up to the second transit flight.Also they provide much better food than UA.
France is the best European country for tourist, everywhere is so beautiful whatever big city or small city or countryside.