When I first moved down to the US, I brought my Seadoo race ski. I have receipts for over $24K in parts and machine work, including the original purchase of the ski. I listed it for $8500 to start and slowly lowered the price each week till it hit $5K and then parted it out on the boards and ebay. I had the hull and title listed for sale for another couple months before just cutting it up with a sawzall and taking it to the dump.
It's sad but a reality. The base ski is always worth book value and all the bolt on's ever do is bump it up $500- $1K from there, regardless of actual cost. Labour is always a dead loss. Guys like me do everything ourselves and see no value in it.
After all that work, why would you want to sell anyways? Looks like a pretty sweet ski and fun to ride.