Compare with other boats sold in your area. There are several factors to consider: Engine hours and service history - The higher the engine hours, the lower the value to the boat. Up to date service history will show money has been spent to maintain engines.  Options and inclusions - the more options on the boat the better the value. Condition - Regular maintenance will show and the opposite is also true, the better the condition the more value for the buyer. Remember asking prices you'll see listed are not what the boats sold for. You'll need to ask brokers the price the boat actually sold for in the end. Sometimes the difference is very significant.