Ross, my wife and I picked up a CPO Jetta two years ago exactly as you want to do, "here is our out the door price we'll pay, take it or leave it".
After haggling for a while, we threw another $50 on our figure and we had the car. I personally would have walked, but my wife had just fried her old Jetta when she did not notice that the coolant was leaking, then gone........(just roll eyes and move on)
-Chris