I looked on-line last month before selling my 2014 Oasis.  I sold it last week for $2400.  It was well loved and used but in great shape.  The actual asking price you will advertise depends on several items: will you deliver, will you ship, are you in an area where kayaking is popular (clubs, dealers, etc.).  Next I advertised on ebay, craigslists and local weekly papers.  Because I live in an area with hundreds of lakes with marinas, I placed ads on their cork boards For Sale.  
Now what should you ask?  Need to sell it soon?  Then I would advertise at $2800 - 3000.  Just want to sell it but still use it while waiting?  Then maybe $3200 - 3500.  Just my opinion but hey, I sold mine  
 Jack