I did a little calculation, and if we take the GDP/capita as an indicator for ticket prices, then the 110 Euro for the FOS in Poland would equal 330 Euros in Ireland...
Or the other way round, Poland should cost around 40 Euros taking the relation of price/GDP of Ireland. Simply said - it's far too expensive. The difference is not that much with other countries.
Belgrade-Bucharest-Budapest-Brno