I'm about to buy a new Honda and am going to take a look at the Costco service as PP mentioned. TrueCar also gives you a guaranteed price. However, I came across a site called Fighting Chance. It is $40 and supposedly gives you all the tools and scripts and info to get the best price over email. The site is very 1998 with an insane amount of text, but I've read several good reviews and no bad ones. The only bad things that came up when I Googled were people calling it a scam who hadn't used it, just based off the look of the site. You get inventory info, the promos the dealers have to incent them, timing help, etc for the exact model you are looking at. I figure on a $30k+ purchase, I might as well try it for $40.