I once haggled over a hat with some street salesman in Arabic. Managed to take it down from 10 to 8 dirhams. Then I felt bad from haggling over 50 cents with a guy that probably ears in a year what I make in a week. I still have the hat though.
Nah. They love the haggle. And he most likely still made a nice profit. If they announce 10, you can bet they still turn a profit at 4.