Originally Posted by
nanirina
Sorry if this is a stupuid quesiton, but do I have to prepurchase the train ticket or can I purchase the train ticket upon arrival at DUS?
I checked my local rail ticket issuer and even tho the train ticket from DUS to CGN is only 16 USD, the service charge is $18 USD!!

Here the options, how to buy a ticket:
http://www.bahn.de/p/view/internatio..._booking.shtml