Two markets pretending to be one
The art market is reported through auction results because those are public. But a large share of transactions — plausibly the majority by value — happen privately through dealers, at prices nobody publishes. The visible market is a sample, and a biased one: auction houses select for what will sell.
This matters for anyone using art price indices. They are constructed from repeat sales of works that came back to auction, which systematically excludes everything that failed to sell or was quietly disposed of at a loss.
Provenance is most of the value
An unattributed 17th-century portrait is decoration. The same canvas, with documentation establishing it as a Rembrandt, is a national treasure. Nothing physical changes; the paperwork changes.
Provenance also carries legal weight. Works looted during the Nazi era continue to surface and be restituted decades later, and gaps in a chain of ownership covering 1933–45 are a serious red flag that can render a work unsaleable.
The costs are enormous
Auction buyers pay a buyer's premium, commonly around 25% at the lower end, tapering on higher values. Sellers pay a seller's commission, plus photography, insurance and sometimes a catalogue contribution. Add VAT on the premium, artist's resale right on qualifying works, transport, conservation and storage.
A realistic round trip through auction can absorb 30–40% of value. Art must appreciate substantially just to break even, and a substantial fraction of works offered fail to sell at all — "bought in" — which then taints them for future sales.
Why people buy it anyway
Because they want to look at it. Art that is bought as a financial asset alone tends to be bought badly: the financially-motivated buyer chases names and recent price performance, which is exactly the cohort most exposed when a fashionable artist's market cools.
Money laundering regulations now apply to UK art market participants for transactions above a threshold, requiring customer due diligence — a significant change from the historic opacity of the trade.
How you would actually trade it
Buy what you would be content to own permanently, because you may have to. Condition reports matter enormously and are free from auction houses; request one and read it carefully, since "restored" covers everything from a sensitive touch-up to a substantially repainted surface.
Set a maximum before bidding and include the buyer's premium and VAT in it. Auction rooms are designed to make you exceed it.
For works above modest values, independent condition and attribution advice pays for itself. So does checking the Art Loss Register.
What goes wrong
- Round-trip costs of 30–40% through auction.
- Forgery and misattribution. The Knoedler gallery sold roughly $80m of forged abstract expressionist works over 15 years to sophisticated buyers.
- Taste risk. Artists go out of fashion and do not always come back.
- No income, real holding costs — insurance, storage, conservation.
- Failure to sell. An unsold lot is publicly recorded and damages future saleability.
- Restitution claims on works with wartime provenance gaps.
This entry describes how a market works. It is not a recommendation, a price forecast, or advice about whether this belongs anywhere near your money. How entries are written.