OK, right:
Leaving Dublin for AMS on Thursday 6th and returning Sunday the 9th is 92.65 euro all inc.
Hostel in Amsterdam for three nights 60euro
Cirque du Soleil ticket from 25euro (restricted viewing) to 69euro
Altogether, that's 200 euro for averagely priced ticket.
That's too bad for a city break including a show like this!