We all have a different method assessing boat value.
Things that don't add value in my eyes, but others may like them
- Fluffy matching cushions and pillows
- "it comes complete with dishes and cutlery"
- TV screens of any type
- security systems
We all have our own reasons for owning a boat. Find one and make it yours.
I think there are two issues here;
1) What items/features in a boat would cause you to be willing to pay more for the boat,
2) What items/features in a boat would simply make you more interested in that particular boat.
As my wife went through the buying process relatively recently, we approached it this way;
1. What can we afford?
2. What type of boat (Pilothouse, sedan, displacement vs SD, fly-bridge or no, walk around decks or not etc...?
3. What specific model of boat? ie which specific boat do we think meets the first criterion the best?
4. Are there examples of that model, at that price, in our region, that appeal to us?
It is at #4 where things like amenities, condition, features help us choose between boats. Give us two identical boats but one is dirty and the other is clean, we would choose the clean one (assuming purchase price was equal). That doesn't mean I would write off a boat that was dirty. An electric crane was on our boat. That wasn't a "must have" but it helped us pick this boat others. It had a poor choice of anchor, that didn't mean we would walk from the boat.
Our boat was owned by a wealthy seller. He was able to afford to have the boat regularly washed, so it happened to looked nice. The owner also had Parkinson's disease. If he didn't have the money, the boat would have been very dirty since he wouldn't have been able to clean it himself.