Finding the market price
How to identify reliable comparables, read listings and build a useful sample without being misled by extremes.
Before searching for prices, establish exactly what you are valuing.
Check the full model name, variant, year or production period, country of manufacture, finish, configuration, hardware revision and original accessories. Serial numbers, labels, rear panels and documentation can help distinguish products that look very similar.
This matters because a broad search can mix genuinely different items: a reissue with an original, a standard version with a limited edition, or an early pedal revision with a later one.
If you cannot identify the exact variant confidently, state that uncertainty and use more conservative comparables. A precise price attached to the wrong model is still a poor valuation, even if the arithmetic is flawless.
A useful comparable should resemble the item being valued as closely as possible.
Prioritise, in this order:
- the same model and version;
- a compatible production period;
- similar condition;
- similar included equipment, such as case, power supply or important accessories;
- the same geographic market, or one with comparable transaction costs.
There is little value in collecting dozens of weak listings if a smaller number of highly relevant comparisons is available. When data is abundant, separate items belonging to different revisions, finishes or configurations.
Always record the main differences. A perfect comparable is rare; the goal is to understand how similar it is and what adjustments are needed.
When you collect several comparables, do not look only at the arithmetic mean.
Imagine five prices: €650, €690, €700, €720 and €1,300. The average rises sharply because of the last observation, while most of the market is clearly concentrated around €700.
With small samples it is often useful to look at the median, the central observation, together with the range where most prices cluster. Outliers should not automatically be deleted: they may represent an exceptional example, a pricing error or an urgent sale.
Before using an extreme value, ask why it is different. A good valuation interprets the data rather than merely calculating it.
A price from several years ago can be a historical reference, but it does not necessarily describe today's market.
Prioritise recent data, especially for products still in production, digital gear, equipment with frequent revisions and categories strongly affected by current new-product pricing.
For rare or discontinued models you may need to widen the observation window. In that case, compare several years and determine whether there is a genuine trend or whether the differences mainly reflect the condition of individual examples.
Do not apply an automatic appreciation percentage. Market evidence comes first; any time adjustment comes second.