KT1988 "it could be probably more useful to send the cadet on 737 TR than for example on Dash TR since the cadet is already prepared for 737."
It does not work like that. I did my MCC on a 737 ages ago, and have since never done anything in a 737. Before RYR used to charge 300 Euros for an assessment, now they probably take a much larger cut if they have agreed some deal with an APC MCC FTO.
Another sucker is born every minute, who is willing to spend silly money to try to secure themselves an interview.