Kurt's probably right about that. And boat trader online should give you a bunch of comparisons quickly, which is very useful. Alot like getting "comps" for house appraisals or setting price before selling. The online NADA guide for boats is
here. It's still good info to know, should you get into a haggling match; at least you will know where the other person is coming from when he low balls you.
Here's another "Blue Book" type of agency:
http://www.bucvalu.com/
These guys provide a vehicle history service like carfax.com does (obviously not useful for your immediate need - I just thought it was cool to know about):
http://www.abika.com/Reports/Boatand...istrations.htm