Not beating you up....but I'm curious how you know the "local" price was 200J? Did the bar have that price posted?
I've seen prices recently from 150J to 600J....so it goes. I don't buy at the places that I can't afford as I wouldn't anywhere...and YES, if I'm paying a higher price...that beer better be ICE cold....
Also, the driver may not have been technically lying to the Germans (if I remember correctly) one bar at the airport charges 400J and the other charges 500J.