Not to disagree with the premise of your comment but I can, at least partially, answer your question regarding Germany. Germany uses the weaker Eurozone countr

Not to disagree with the premise of your comment but I can, at least partially, answer your question regarding Germany. Germany uses the weaker Eurozone countries to artificially deflate the cost of purchasing their exports. If the Euro was only based on the strength of the German economy their exports would be a lot more expensive. Whether or not this would reduce sales significantly or not is debatable but chances are it definitely wouldn't help.