i dont haggle a whole lot if i see something thats outrageous i just keep walking. but if i see something that might be a little on the high side of what its worth. and he doesnt want to go down any. i always ask if i can have it for the price tag AFTER tax. and that can save a fair amount, and most dealers will allow it. i hate being suprised with how much i pay when i forget about tax.
the most important thing like what was said above is to go in knowing what things are worth, you need to know what something is at its cheapest and what something is still worth at its most.
i feel like dealers probly really dont care as long as you dont completley lowball them.
or just be in the military, dealers tend to like people in the military and help us out