Good luck: the ticking clock

This was a pretty brutal blow-off:

I give my rap to a lady at the top of a flight of stairs, her 12-13 year old daughter below. She has a slight accent, maybe German or East European. After I'm done, she says, "let me see if I understand: you are selling your cartoon books for 1 or 2 dollars?" I explain that I give singles for a buck or two or a book usually gets five. She says, with this incredibly imperial air of disregard, "we don't have anything for that," or something similar. It wasn't the words: it was the tone. I just auto said "good luck" and spun around, but, remembering the other day a few weeks ago, I chimed in, "Have a nice day!"