Tickets at FanSnap | Ticket Search
http://www.fansnap.com/
Stubmatic: Your Personal Box Office
http://www.stubmatic.com/
SeatGeek | Ticket price forecasts and the best ticket deals
http://seatgeek.com/

Could be a great ticket Scalping tool

At SeatGeek you can search by your favorite team, performing artist, or venue/city if you're open to taking in anything. SeatGeek renders a map of the venue, charts out where the seats are located, and dishes the dirt on the overall state of pricing at the venue as well as individual tickets. The price forecast tells you if you should buy now or wait based on prior data for the team/artist and the venue in question.

SeatGeek forecasts the price of sports and concert tickets, enabling you to buy tickets when they are cheapest.