It's regular price but if you book in advance a certain train it's often cheaper (~20-80€ depending on the time of departure...) Here are some details (only fo

It's regular price but if you book in advance a certain train it's often cheaper (~20-80€ depending on the time of departure...) Here are some details (only found a german link: https://de.wikipedia.org/wiki/Verkehrsprojekt_Deutsche_Einheit_Nr._8 https://de.wikipedia.org/wiki/Verkehrsprojekt_Deutsche_Einhe...) - costs for the whole track was around 10 billion euro.