I was sitting at a table at a dealership in process of buying a car and overheard this at the table next to me:
"What's the best price you can give me?"
"Sir, we advertise our lowest prices up front so you don't have any pressure to haggle."
"You can do better than that price."
"... Let me see what I can do."
I believe he got a grand knocked off when it was all said and done.