Originally Posted by
temeraire007
Just as a recommendation get a "bahncard probe 2 Klasse". It will cost only a fraction and enables you 25% reduction. Usually already is profitable after 1 ticket.
While it is too late, since it was last year, would that have worked for a Cologne-Paris trip? I just assumed that a one time, one way trip it would not have been cost effective. I will file that away for future reference.