Mr Angry From Purley,
Hiya 'A', the point here is that the passengers are paying down the back and even the guy/gal sitting up the front is paying, significantly more, for the seat he/she occupies.
I do have an insight into what goes on at 'Ashtrays' and of course they are only going to allow guys/gals that are up to scratch to proceed with the flying after their type rating but that doesn't prevent Ashtrays from doing the 'hard sell' on the T/R & flying package. Indeed there is often a backlog of guys/gals that have done the T/R but there simply aren't enough slots available to fill them in for the flying so, just perhaps, should a few not be up to scratch then, just perhaps, it might suit!