It depends on the time that you buy them. My friend bought them for $50 for the show in Milwalkee. I checked the one for Chicago on Jan. 20, 2009.and they on sale before christmas. They were like $1,520.
You know what I was looking for them too but but idk what to believe people say 500,230,1,550. I'm trying to get backstage passes for me and my 2 friends because we luv him!!!! But I'm still looking :D