"An August 2010 conference in Anaheim, Calif., cost the IRS $4 million. About 2,600 managers attended the event and stayed in presidential hotel suites that usually cost $1,500 to $3,500 per night. About 15 outside speakers were paid $135,000 each"<p>$1,538 per attendee if you do the math. No mention of how long the conference was, but that does not seem unreasonable for hotel stays, flights, food, training, etc. Also, I doubt the speaking fee was really $2 million in total. If it was, that makes the rest of the conference really cheap.