If anyone just goes in and accepts what a dealer offers your a "lay-down" to begin with, when I bought my truck on this last round I came in and told the guy I wanted $13,000 for my Civic, I paid 13,500 one year before, I also told him I would have a check for the remaining on my truck from a total cost of $28,000 after Everything including taxes ($32,000 MSRP)
took $4000 off MSRP + Taxes and all that dealer Bull$h!t they try to add on plus drove around in a new Civic for a year at the cost of $500
I don't listen to any of the books, Edmonds, NADA, KBB... tell em what TF you WILL do, wants are not an option, you go in with wants you leave bleeding and hold the title SUCKER for the rest of your Soft life.
Dealerships have a lot more money to play around then most people think... ever hear of a dealer kickback? also that invoice sh!t..heh... go ahead and buy that one, then when you see the taxible value when you get your plates then you can see the price of the other invoice they don't tell you about.