Hi Tduff and welcome to the forum.  Your 2009 is a step up from the older models because it it the first year for the V-2 Drive and has the Click N Go  Drive insert.  Look on the Craigs list in your area and adjust for condition.  The Sport might be $100 less than a comparable Revo 13 or Adventure and maybe $200 less than a tandem -- just as a rough gouge.  Take good pics, list all the accessories and upgrades and take your best guess.  You can lower the price if there  is no interest.  Spring is a good time to sell!  Good luck! 
