According to Liz Smith today, houseguests of hers were able to get scalped tix outside the theater the day of for $100 a piece (balcony). I read a local (SF)reviewer found an unnamed on-line ticket broker based in Jersey that sold him Balcony seats for $120 a piece (before the Tonys). Good Luck.

PS:I saw the show in previews, the day of the Catman Do and feel it is well worth the price IMHO to see with Nathan Lane and Mathew Broderick...can't imagine anyone else in those parts...well maybe Gene Wilder and Zero Mostel but I don't know if they can sing and Zero is dead.

PSS: I Just bought the VHS of the original and watched it again, it is hilarious too.