There is a reason for a salesman and the tactics. To get more money from people. The amount of people they "piss off" is far less then the amount of people that have no idea what they are doing, or honestly do not care about anything other than the monthly payment. The dealers like those people and there are a lot more of them. The people that get pissed off are those that understand the system, know they are getting ripped, don;t fall for the excitement and head games and the dealers will usually not deal with that because for every smart person on the lot looking, there are 10 dumb ones. Most places, if you state you will not need financing, you have no trade in, and just want a bottom line price, will just blow you off. They know there is little to no chance you'll budge so why bother with you? You walking away does not hurt them one bit. Someone right behind you in line will pay a lot more.