Someone posted a while back that dealers no longer use Kelly. There is some auction that happens in PA and those numbers are published almost daily and that is what the dealers are using now. What I found when using the Kelly numbers a few years back was that the two dealers I went to said they never give a car Excellent, its always good, in spite of the fact that my GT Cruiser was cleaner than any of the PT's they had on the floor and it only had 11,000 miles on it after a year two years on the road.
Good luck !

Pat