There is one "discount" that allows you to bypass Ticketmaster service charges; however, it is only available for Tuesday, Wednesday and Thursday performances 8/31-10/28/10. From what it looks like, it is only on orchestra seating, but you can try in other areas of the theater. You must purchase by 9/1. The code is PLUMTMF.
Also, you can use code PLUM to access reserved orchestra seating for Tuesday, August 24th 8pm, Wednesday, August 25th 2pm & 8pm and Tuesdays, Wednesdays and Thursdays in September/October. You must also purchase those by 9/1.
"We like to snark around here. Sometimes we actually talk about theater...but we try not to let that get in our way." - dramamama611