What should I pay
Turn a walkthrough into a number. List what you found, what each fix costs, and this works out the offer that leaves you whole, plus the first-year money nobody budgets for.
What you found, and what it costs to put right
Asking prices are not comparables. An average of three listings tells you what three optimistic sellers want, not what anything sold for. Real comparables come from completed sales: auction results, a broker's sold record, or an appraiser. Treat the comparable field here as a sanity check, not a valuation.
Deferred maintenance is not a discount, it is a bill. The point of the arithmetic below is that money spent in year one is money you paid for the thing, whoever writes the check. A cheap boat with $30,000 of deferred work is more expensive than the well-kept one next to it.
Some findings are not priced, they are refusals. A wet-cored hull, a salvage title, a logbook with missing years, or a HIN that disagrees with the paperwork are not line items to negotiate. Walk away and buy the next one.
The pre-purchase inspection kit for your boat
This page prices the findings. The kit is how you find them: the documented failures for your exact model, in the order to check them, with the repair costs already attached.
See the inspection kits