8.5 m motor boat by Boston Whaler · built 1999–2025 (boats seen)
Boston Whaler
285 Conquest used price guide
Middle half £93,500€108,500$125,000 – £153,000€178,000$203,500
median asking price of 42 boats listed since Oct 2020, in today's prices · asking, not sold
8.53 mbeam 2.90 mdraft 0.51 mfull specification
A used Boston Whaler 285 Conquest asks a median of £118,500€138,500$159,000 across 42 boats listed since Oct 2020, in today's prices. Half sit between £93,500€108,500$125,000 and £153,000€178,000$203,500, and each year of age takes about 5.6% off.
The field
Each number is one boat: its asking price in thousands of pounds, at today's market level, set above the year it was built. The orange line is the model's middle price for its age; the shaded band holds the middle half. Tap a number to see the boat behind it. The price scale is logarithmic: each step up is the same percentage.
Your boat
Estimated from the boats above. No email, no broker call.
Likely range £115,500€135,000$155,000 – £142,000€165,500$190,000
16 comparable boats built 2013–2019 · hours not given · all markets · asking, not sold
Add your asking price to see where it sits among boats like yours.
By year built
Median from five boats; middle half from ten. Below that we print nothing rather than a guess. Linked years have their own page with that year's boats. The spread is drawn on the field's logarithmic scale, in pounds.
| Year | Boats | Median | Middle half | Spread |
|---|---|---|---|---|
| 2025 | 1 | — | too few boats | |
| 2024 | 2 | — | too few boats | |
| 2023 | 1 | — | too few boats | |
| 2022 | 2 | — | too few boats | |
| 2021 | 1 | — | too few boats | |
| 2020 | 1 | — | too few boats | |
| 2019 | 2 | — | too few boats | |
| 2018 | 3 | — | too few boats | |
| 2017 | 1 | — | too few boats | |
| 2016 | 2 | — | too few boats | |
| 2015 | 2 | — | too few boats | |
| 2014 | 3 | — | too few boats | |
| 2013 | 3 | — | too few boats | |
| 2012 | 2 | — | too few boats | |
| 2011 | 1 | — | too few boats | |
| 2010 | 2 | — | too few boats | |
| 2009 | 1 | — | too few boats | |
| 2008 | 2 | — | too few boats | |
| 2007 | 3 | — | too few boats | |
| 2006 | 3 | — | too few boats | |
| 2003–2005 | 0 | — | none listed | |
| 2002 | 1 | — | too few boats | |
| 2001 | 2 | — | too few boats | |
| 2000 | 0 | — | none listed | |
| 1999 | 1 | — | too few boats |
Across boats built 1999 to 2025, each year of age takes about 5.6% off the asking price.
What moves the price
Each factor compares boats of the same age, so a newer boat's premium isn't counted twice. Five boats or more on each side, or we say so.
Each year of age takes about 5.6% off the asking price.
Too few boats to compare factors yet: we need five on each side of a split.
Asking prices, not sold. Factors can overlap, so treat these as a guide to what the market asks, not a formula.
Time to sell
listed so far: the median of 36 boats seen on two or more dates
have cut their asking price: 0 of 35 boats seen at least 14 days apart
median size of a cut · withheld: fewer than five cuts to measure
These are asking prices, and asking is not selling. Days listed so far is not time to sell: a boat still listed has not sold, and we do not yet record when a listing ends. We have not measured how far sale prices land below asking; the methodology says what we can and cannot measure.
Cost to keep
A year on a South Coast marina berth, insured at the Gauge Value, in pounds. An estimate from published rates, not a quote.
Fuel is not included: no cited source gives the engine hours a typical owner runs in a year.
Questions about the Boston Whaler 285 Conquest
How much is a used Boston Whaler 285 Conquest worth?
The median asking price is £118,500, from 42 boats listed since Oct 2020, in today's prices; half sit between £93,500 and £153,000. Each year of age takes about 5.6% off. For a specific boat, use Your boat above.
How long does a Boston Whaler 285 Conquest stay on the market?
We do not measure time to sell yet. Across 36 boats seen on two or more dates, the median time between first and last sighting is 28 days so far. 0% of 35 boats seen at least 14 days apart have cut their asking price.
How fast does a Boston Whaler 285 Conquest lose value?
About 5.6% of its asking price for each year of age, fitted on 42 boats built 1999 to 2025. On a boat at the median that is about £6,600 a year.
Are these sold prices?
No. They are asking prices observed on public listings, restated at today's market level. We have not yet measured how far sale prices land below asking, so we do not publish a figure for it.
About the Boston Whaler 285 Conquest
The boats behind this page were built between 1999 and 2025 and have been listed since Oct 2020, most often in the US market. 0% of the boats seen at least 14 days apart have cut their asking price.
How we measure: we read public listings from brokers and marketplaces, count a boat once when it appears on several sites, store its asking price each time it changes, and restate older asking prices at today's market level. We never republish a listing, a photograph or a seller. Every figure is recomputed nightly and dated; below five boats we publish nothing. The 42 boats here were listed in the US. Full methodology
- Length overall
- 8.53 mfrom listings · 37 boats
- Beam
- 2.90 mfrom listings · 32 boats
- Draft
- 0.51 mfrom listings · 11 boats
- Built
- 1999–2025from listings · 42 boats
- Type
- Motor boatour classification