Here's what I understand:
The players (i.e. the entire squad I assume) get about €1,000 per game from the FAI. Qualifying bonuses are paid from the FAI to the "squad" and divvied up by them as they decide.
All expenses would be paid of course.
Handy money for a youngster making a debut but not a lot in the whole scheme of things for a Premiership high roller..........like Paul McShane.