how can I get ultra cheap theatre tickets, but still get good seats?

Question:

Where/how can I get ultra cheap theatre tickets, but still get good seats?

I need to get tickets to 'In Celebration' at Duke of York's Theatre. I once was searching for tickets to Chicago and got the same seats much cheaper, but I don't remember the site. Also, would it be cheaper to call somewhere or buy them from the internet? Thanks people! :)

Best Answer - Chosen by Asker: I realize this won't help you with this specific predicament (sorry), but I find joining Theatre or Drama clubs is an excellent way to get access to a variety of shows or operas at cheap prices. I hope someone can answer your question more specifically soon. Otherwise, you might want to try another search of the internet or phone the theatre specifically. They should have most of the information you need regarding seat prices or deals.