Intelligence
Bid Strategy
Game theory, market signals, and precision tools for collectors who intend to win.
Game Theory Bidding Guide
Every auction is a simultaneous-move game. Understanding the equilibrium strategies separates disciplined collectors from reactive bidders.
Nash Equilibrium & Dominant Strategies
In a second-price (Vickrey) auction, bidding your true valuation is the dominant strategy — it maximises expected surplus regardless of what others do. In ascending English auctions, the equilibrium collapses to the same outcome: the highest-value bidder wins at just above the second-highest valuation. Knowing this, your only task is to determine your honest ceiling before the lot opens.
Bid Timing & Sniping
Late bidding — placing your maximum in the final seconds — prevents rivals from updating their valuations based on your interest. In timed online auctions, this is a dominant strategy when bid extensions are absent. When extensions are active (as in our live sales), sniping loses its edge; instead, place your true maximum early and let the system proxy-bid on your behalf.
Reading Reserve Price Signals
A lot that opens at its low estimate with no early bids is likely sitting at or near reserve. A lot that jumps quickly past estimate signals either a low reserve or multiple motivated bidders. Watch the bid count-to-increment ratio: many small increments indicate a proxy war; a single large jump indicates a strategic ceiling bid from a confident collector.
Psychological Leverage
Odd-number bids ($12,250 vs $12,000) signal precision and commitment, often deterring rivals who interpret them as a collector who has done their homework. Avoid round-number ceilings — they are the most common stopping points. Bidding just above a round number ($10,250) frequently captures lots that stall at $10,000.
Bid Calculator
Enter a lot's estimate range to receive a recommended maximum bid, increment strategy, and estimated win probability.
Enter an estimate range and calculate your strategy.
Market Intelligence Brief
Live signals from the current sale cycle — updated each session.
Lots receiving 3+ bids in the first 10 minutes of a timed sale close an average of 34% above low estimate. High early velocity is a strong demand signal — set your ceiling before the lot opens, not during the rush.
Jewelry and signed fine art are outperforming estimate by 18–22% this cycle. Watches are trading at estimate. Sculpture is soft — reserve failures are running at 12%, creating opportunity for patient buyers.
Bid in the final 90 seconds of timed lots with no extension rules. For live sales, enter at the third increment above opening — this filters out casual interest and signals serious intent without revealing your ceiling.
If a lot has already exceeded its high estimate by more than 15% and you have not yet bid, the market has priced in information you may not have. Discipline is the most underrated edge in collecting.
Auction Glossary
The vocabulary of the room — every term you need to bid with confidence.