What are the total costs to train an astronaut from selection until they are ready to go to space? How much time does it take? And is it possible to break down the costs by category (salary, training, medical etc.)?
The specific example I am interested in is Alexander Gerst.
How much did it cost to train Alexander Gerst from the moment of the congratulatory handshake when he was selected into the ESA Astronaut programme to the moment he boarded the Soyuz capsule for the ISS the first time?
If you know about a similar example (NASA, ESA, Роскосмос etc.), that would be fine too.