I think the fact that it's a new arena has something to do with it. as well as the locations. I was pricing next season's NHL (hockey) tickets and notice that the price of the tickets at some arenas were pretty high. (that is if you wanted to be down by the ice).

Where the Thrasher's play (Philips in Atlanta) the prices are "reasonable".

In any case, we will see what the bon jovi tickets are like, when they actually go on tour.