$33,000 per show as of two years ago! Probably approaching $40,000 as of this year.

"... Show facts

    * Grand opening: May 5, 2005
    * Show length: 17:14
    * Show cost: $33,000 per showing
    * Previous shows:
          o Remember... Dreams Come True (2005-present)
          o Imagine... A Fantasy in the Sky (2004-2005)
          o Believe... In Holiday Magic (2000-2004, 2006-present)
          o Believe... There's Magic In The Stars (2000-2004)
          o Fantasy in the Sky (1958-2000)
    * The music used during the opening and finale of Remember... Dreams Come True originated from Wishes at the Magic Kingdom park in Orlando, FL. However, the narration is performed by Julie Andrews instead of Jiminy Cricket.
    * At the conclusion of the display, "Remember When," written by Richard Marx and performed by LeAnn Rimes is played throughout the park. Later during the second season of running the fireworks show, a second song was added after Remember When. The song Wishes performed by various artists from the special CD with proceeds going to the Make A Wish Foundation began to play after the fireworks as well...."

Source: http://en.wikipedia.org/wiki/Remember..._Dreams_Come_True