Tough call without seeing the boat. Towers are important but overall condition will be the primary factor. Color and graphics also help in eye appeal. If the boat has been not used and neglected for 10 years, it will be worth far less than something that is in like new condition, serviced regularly, and stored inside during off season. Would need pictures and more data. In my opinion that boat in average condition is prob. worth 14-17 thousand and a little iffy for huge investment returns. Again condition, options, service history and canvas will be huge factors. I am assuming it includes a trailer in avg. condition as well. If you are not in the boat retail business or don't have a passion for the boats, I would not reccomend buying any 10 year old boat on speculation.