My son is thinking of selling his "like new" kayak...is there a "Kelly blue book" for kayaks ?
Roger T

What is it?

I think your best bet might be to google the make/model. See what you find.
If you get lucky you will find a craigslist post or something.
My suggestion, start off with the what you think the high value is, add O.B.O ( or best offer ) and go from there.

This is the formula I try to use.These are just my thoughts and by no means a KBB equivalent. I'm sure others will chime in.

Retail price minus 20% the first year. Additional 10% per year after that for two years. You can add a little bit back in for accessories but keep in mind people may not want them at all so it can hurt you if they are not desirable. If they are desirable, I add them in at 50% of retail. For example:

Ride 115X
Lowrance Elite 4 DSI FF
240CM Bending Branches Angler Slice Paddle

Retail is
Ride $1000
FF $250
Paddle $200

In like new condition with just these three:
Ride $800
FF $125
Paddle $100

That's a package of $1025
I'd price it at $1000 even. When it is like new PLUS they will get some accessories, they'll be more likely to buy it.
If you made a mistake and are trying to get all of your money back, it'll take a lot longer. Sometimes you just take your loss and move on. I've sold the last three kayaks I've posted in less than an hour. It needs to be desirable to do that though. Name brands like Jackson, Wildy, Hobie, Native etc will sell faster and for a better price than a big box brand most times (not always).

Thanks for all your replys. That formula sounds like the way to go..
roger t