Kennedy Center cancellation tickets are face value, meaning it could be $99 or $625 or anywhere in between, depending on what tickets they have. I’ve heard it’s usually 0-4 tickets total available. They would also rather see a seat go empty than discount it. I discovered that when, one minute before curtain, the box office manager told me that there were no seats left below my price limit, and that she had three empty seats at twice that price each, but that there were no discounts, and so I left and those seats went unused.