Sounds like appropriate compensation for highly skilled production managers in an historic and popular venue.
Do you think Grand Ole Opry, or Yo Yo Ma (not to be confused with Yo Ma Ma), or any of the top musical performers likely to play Carnegie wants to work with a stage/light/audio engineer that only makes $50k?
I'm guessing that similar gigs at equally high profile venues are commensurate in salary.
An aside, it's kinda funny looking at the Carnegie schedule and seeing my name playing in October.
1 letter mispelled, but still.