9.4 m motor boat by Bertram · built 1961–1987 (boats seen)
Bertram
31 used price guide
Middle half £53,500€61,500$64,500 – £122,000€142,500$159,000
median asking price of 58 boats listed since Aug 2020, in today's prices · asking, not sold
9.45 mbeam 3.40 mdraft 0.94 mfull specification
A used Bertram 31 asks a median of £84,500€96,500$108,500 across 58 boats listed since Aug 2020, in today's prices. Half sit between £53,500€61,500$64,500 and £122,000€142,500$159,000.
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. 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 £49,000€56,000$63,000 – £128,500€148,000$166,000
27 comparable boats built 1970–1976 · hours not given · all markets · asking, not sold
Add your asking price to see where it sits among boats like yours.
The 1973 page: every 1973 boat and its estimateBy 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 |
|---|---|---|---|---|
| 1987 | 1 | — | too few boats | |
| 1986 | 1 | — | too few boats | |
| 1983–1985 | 0 | — | none listed | |
| 1982 | 1 | — | too few boats | |
| 1981 | 1 | — | too few boats | |
| 1980 | 0 | — | none listed | |
| 1979 | 2 | — | too few boats | |
| 1978 | 1 | — | too few boats | |
| 1977 | 2 | — | too few boats | |
| 1976 | 1 | — | too few boats | |
| 1975 | 1 | — | too few boats | |
| 1974 | 4 | — | too few boats | |
| 1973 | 8 | £106,500€123,500$138,500 | too few boats | |
| 1972 | 5 | £44,500€52,000$60,000 | too few boats | |
| 1971 | 3 | — | too few boats | |
| 1970 | 5 | £76,000€87,500$91,500 | too few boats | |
| 1969 | 1 | — | too few boats | |
| 1968 | 1 | — | too few boats | |
| 1967 | 1 | — | too few boats | |
| 1966 | 1 | — | too few boats | |
| 1965 | 1 | — | too few boats | |
| 1964 | 3 | — | too few boats | |
| 1963 | 5 | £62,000€74,000$75,500 | too few boats | |
| 1962 | 3 | — | too few boats | |
| 1961 | 3 | — | too few boats |
These boats scatter too widely by age to fit a rate we can stand behind.
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.
These boats scatter too widely by age to fit a rate.
Diesel boats ask about 110% more than petrol ones, age for age.
Boats with fewer hours than usual for their age ask about 44% less than those with more.
Boats listed in Europe ask about 7.5% more than those in the US, age for age.
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 32 boats seen on two or more dates
have cut their asking price: 3 of 23 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 Bertram 31
How much is a used Bertram 31 worth?
The median asking price is £84,500, from 58 boats listed since Aug 2020, in today's prices; half sit between £53,500 and £122,000. For a specific boat, use Your boat above.
How long does a Bertram 31 stay on the market?
We do not measure time to sell yet. Across 32 boats seen on two or more dates, the median time between first and last sighting is 125 days so far. 13% of 23 boats seen at least 14 days apart have cut their asking price.
How fast does a Bertram 31 lose value?
These boats scatter too widely by age to fit a rate we can stand behind, so we do not publish one.
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 Bertram 31
The boats behind this page were built between 1961 and 1987 and have been listed since Aug 2020, most often in the US market. 13% 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 58 boats here were listed in Europe and the US. Full methodology
- Length overall
- 9.45 mfrom listings · 54 boats
- Beam
- 3.40 mfrom listings · 52 boats
- Draft
- 0.94 mfrom listings · 30 boats
- Built
- 1961–1987from listings · 55 boats
- Type
- Motor boatour classification