Due to the volatility of currency markets, we can only offer the most competitive pricing on our Euro-based trips by partially tying the trip cost directly to the value of the Euro. In Mai 2010, when we set the rates for our 2010 program, the US Dollar equaled 0,821 Euros. While in most years, no price changes are ever necessary, if there were to be a significant change in exchange rates, we may be forced to raise or able to lower our trip price; if so, your final invoice will show the difference.