I paid around $180 for a ticket to see Ray Charles in what would be his last tour of Oz (might have been his final show in Oz as well). I was seven rows back direct centre, well worth it.
I spent nearly $300 for three tickets to rugby union matches back in 2006. One to the Bledisloe here in Brisbane and two tickets to Wallabies vs Boks. Given the fact that the Bled tickets were twice as expensive as the Boks match I could really only afford to either get two to that or 1 ticket and two to the SA game. It was on the second least expensive ticket level and concessions as well.