I'm curious how the economics add up. I had a look at the
NOX prices, and the lowest ones (looking at April next year) are about €65. Generally the cheapest available for a DB daytime service from Hamburg to Munich is about €40.
It looks to me like each of those "suites" take the space of about 4 regular seats (I may be wrong). At a basic level that would suggest they ought to cost about 4x the price of a daytime seat.
A six berth couchette compartment uses the same space as, say, 12 daytime seats in a 2+2 airline configuration. So a single couchette perhaps takes the space of 2 daytime seats. Presumably that space efficiency is why it's been the preferred solution for decades.
At first glance, then, these suites take 4x the space of a daytime seat and 2x the space of a traditionally couchette berth. It doesn't look like they are going to be priced at 4x the cost of a day train or 2x what (say) ES charges for a regular couchette ... so what gives? How do they make this profitable?