>No negotiating and no up-sell.
Which is why I *won't* use the website.
Negotiating generally will knock off 10-20% on the price of a new car. The website will undoubtedly use MSRP for a variety of reasons, and maybe allow the nationwide promotions they run to discount the price. But it'll still be quite a bit more than your local dealer.
It's not hard to say no to the up-selling. "No thanks, I'll pay in cash." "No thanks, I don't need a warranty." And so forth. *Always* negotiate based on the "out the door" price instead of the price of the car, because the dealership will add all sorts of fees and costs on top of the sale price of the car.
The really amusing thing is that turning down the extras will often result in the often abusively high prices coming down to a reasonable number. My wife got a 7 year bumper-to-bumper warranty for less than a thousand bucks, and I got lifetime oil changes and tire rotations for $400 (which has already paid for itself after 3 years).