It depends. I've just been looking for (non-sleeper) tickets from Germany to Prague and back, found some for a group of five adults for 149€ one-way, three mont

It depends. I've just been looking for (non-sleeper) tickets from Germany to Prague and back, found some for a group of five adults for 149€ one-way, three months into the future. The last sleeper train I took was Berlin-Budapest and that was 39€ in a six-bed room, which I personally prefer to economy flights, where the cheapest option is usually somewhere between 10pm and 7am. I can't wait to take another NightJet train. Of course, just going from any place in Germany _to Berlin_ for that sleeper train can cost you upwards of 100€ if you don't book in advance.