If your main concern is filling a room, you may want to invest in a celebrity 
  speakers (and pay the higher fee).  If you’re looking for specific issue-oriented 
  content, you will be better served to hire an ‘industry expert” whose name may 
  not be top-of-mind, and whose fee probably won’t break the bank. 

  Generally, the more well known or in demand a speaker is, the higher the fee. 
  Don’t fall into the “we need someone famous” trap without thinking it through 
  with a compelling speech. 

  Look at the celebrity’s name draw, speaking experience, productive value, and 
  relevance to your group organization, and then determine if they are a value to 
  your meeting. 

  Some planners told us they steer clear of “star power” because they have had 
  bad experience with expensive celebrities who didn’t deliver a quality speech 
  and are too demanding. 

  Others say that it doesn’t matter if the celebrities aren’t articulate, they’re happy
  with the excitement they create and attention they draw.   The choice is yours.