Obama could not fill up a room with only a 650 person capacity, even at a discount...
"Only after I received four email invitations and two personal calls imploring me to come did I call Speaker Pelosi’s office to check the admission price. “You mean, to be in the room with the President of the United States is now on fire sale for $100?”
“How long do we get?”
“How many $100 givers have rsvp’d?”
“Do we need to line up early to get in?”
“That’s not necessary. Everybody will get in.”
And everybody did—450 people in a room that holds 650. Even Obama’s fire sale didn’t sell out."