usmba2010
Hi inTuna, same thing happened to me too. It did not ask me to pay. I also have visited campus. I tried to call them but couldnt reach. Let me what they say when you call them.
I didn't pay either because I attended Weekend for Women which qualified me for fee waiver

Don't worry about it, Duke's application system works great, it's the best one that I have seen. If you dig through your mailbox, you should have an email informing you off fee waiver after the info session.
Now, what do we do for the next TWO LONG months while waiting for results?!