2012 AI?

At one time I owned a 2012 AI only to find out its not for my style of fishing or cared for sailing.  In 2018, I sold the AI because it was just sitting in my garage and maybe gets used twice a year.  The Revo 13 suits my needs the best. If a new Revo 13 comes out with new features, I'd probably get one. 

Wow thats a crazy good deal SOMA... might be interested if the other offer falls through.

Here's a list of some of the changes in the AI, at least up through 2013...

https://www.hobie.com/forums/viewtopic.php?f=71&t=46735

Really hard to tell from that one photo. I have a 2011 Adventure Island. I paid slightly over $3,000 for it new. Looking at that photo it appears to have the large twist and stow sailing rudder. My 2011 came with that same rudder and Hobie later sent me the upright shark fin rudder as well. I still have the twist and stow sailing rudder on my boat with the new shark fin still sitting in the box.

It has been a really good boat for me. Over the last few years I have been using the underlying Adventure kayak with the one outrigger/trampoline set up. Gives me much more room to operate.

If it's an Adventure Island vs Adventure (with add on kit) it should say Hobie Mirage Adventure Island on the rear side panels of the boat. Even with the trampolines, that price seems a little high. You won't know unless you go and look at it. If it has had a purely freshwater life of leisure and stored indoors it will show. Good luck.