$120 for orchestra seats for Spamalot, National Theater in D.C.- and that was cheap. I was lucky to get that price.
My tickets for Wicked in NYC are about $150- not sure where I'll be sitting, but that was the cheapest available. Probably the nosebleed section!
For sports- $55 for a Nationals game. Pretty close to first base.
In college, I got to see a couple of Broncos and Nuggets games for free. The marching/pep bands were invited to play for them.