Dunno, I've always managed to get along fine with dealers.
My first experience ever was a Saturn dealership that had a 98 Celica GT on the lot when I was 18 in Highschool. I eyeballed it when I first entered and passed it up intentionally when walking around the lot with the salesman. I made him spend some time with me, shot the breeze a bit, and drove two cars. In the end, I finally showed interest in the GT and we took it for a spin. Found it was pretty solid mechanical shape and I started talking prices on all three cars I had driven with the ultimate aim of getting them down low on the Celica. The sticker on the car was $16,200. By the end of the day I had them calling me offering $6000. I was making pretty good money in highschool and had $5000 saved, so I had a year of making small payments to my mother to cover the difference she loaned me for the next year. Car never cost me anything but gas, oil, and a filter, and was a breeze to drive for the next two and a half years.
Second was my truck. Fully loaded 2007 Sierra 1500 with the 6.0 Vmax package. Leather, nav, bose (which was promptly replaced with real a real audio solution and not that bose garbage) and the Z71 suspension package including the Denali all-wheel-drive. Knew that truck would be a bitch for them to move. They had it stickered for $37,500 and it had 4 miles on the odometer. Was apparently some custom job someone ordered and then never ended up paying for, as to this very day I cannot build that truck on the GMC website. I convinced them to let me take it home, drove it for two days, all the while negotiating price with them via phone calls. On the third day I signed the papers I knew I got the right price. Actually, I got so much off on that truck I could sell it right now for more than my loan amount even AFTER the prices on trucks fell like rocks.
Needless to say I'm happy. All you need to know is how to play the game. There is a great web article somewhere on the net that is EXTREMELY long, about some guy who worked as a salesman for two dealers (one used car dealer and one prime new/certified dealer) for a few months and he really nails the majority of the dirty tricks dealers use. Bottom line is buying a car from a dealer is just like everything else in life, all you need to do is educate yourself and you can make out without getting ripped off.