That's pretty cool.
I enjoyed myself quite a lot, it was the first tournament I ever went to.
If I remember correctly, the most expensive ticket is 520 Złotych for all the matches sitting in the VIP lodge (Around £100). I don't remember that well though, I think it was a bit cheaper.
The QF matches onwards carnet really pays off though.
Our seats weren't too good because we sat behind the camera but the prime seats weren't much more expensive. - We just didn't manage to book them in time. So you have to do it early.