stillwater, the train tix depends on how long you are around for and how far you are going .
At 349 Euro for the whole month of the tournament i would say if you are there for the long haul definitely worth it,
Indiviual trips for around 2 hours cost between 30-80 euro one way so i guess you could do the maths if you have an itinerary
This link will let you price the journeys you plan separately
good luck ,
I am staying at the campsite and will be using the coach transfers to the 3 aussie games