Every market is different but I can tell you from a buyers experience how my market is. I just recently bought a couple jet skis off craigslist. I noticed the market is flooded with 2002 and 2006 models. Anything above 2002 was selling for just about 5 grand per boat. give or take. Once you got into the 2011 they suddenly jumped to around 10k per boat.
I looked at everything in my local market...within 150 miles. Most of the boats were obviously abused. They all ran and had fresh oil but the gel coat was either worn or chipped or the seats were worn. None of that affected the asking prices. Its crazy what people think their boats are worth.
Now...I look back through craigslist today and 80% of the boats I was looking at two months ago are still on the market. Part of the problem is a guy can buy a brand new ski for around 7 grand from the dealer. May not be supercharged or such, but its.a brand new boat with a warranty.
I agree with others that your price is a little high. Do you see other units comparable to yours priced like yours? How long have they been on the market? Patience is a virtue for a seller. Not for the buyer. But most buyers are not going to pay 3 grand less than a new unit for something that's been used. They will just go buy new at that price point.