How much would Honda shop give me for my 07 420 rancher to trade in?

 

I'd check out Kelley Blue Book, should give you a good idea.

New Cars, Used Cars, Blue Book Prices & Car Values - Kelley Blue Book

 

Yes...check KBB or NADA. The local Honda shop here uses NADA and used that guide as a reference when I traded my 05 Rancher for the 07 Rubicon I have now. All I wanted was KBB suggested trade in value or I wouldn't deal. The Rancher had a Warn 424, Viper winch as well as a front disc brake conversion and I know less than 200 hours on it.
They wound up giving me 700 more than KBB suggested and they sold it less than 2 weeks later.

 

Not as much as selling it yourself since they will buy it off you and resell it and not to break even thats for sure.