The most common reason bidders lose a lot they wanted is not money — it is timing. They are away from the screen for the final ninety seconds, or they hesitate for a breath too long. Proxy bidding exists to solve exactly that problem, and once you understand it you will rarely bid any other way.
One number, working quietly on your behalf
When you place a proxy bid you enter the maximum you are willing to pay — not the amount you want to bid right now. The system then bids on your behalf, but only ever by the smallest increment needed to keep you in front. If you set a maximum of $4,000 and the next-highest bid is $2,200, you lead at $2,300, not $4,000. Your ceiling stays private; only you ever see it.
This is the same mechanism the great auction houses have used in the room for a century, where a commission bid is left with a clerk who executes it discreetly against the floor. Online, it simply happens in milliseconds.
A proxy bid is a decision made calmly in advance, not a reflex made in the last ten seconds. That is its whole advantage.
What happens when two proxies meet
If another bidder has also left a maximum, the two proxies bid each other up automatically until one ceiling is reached. The lot lands one increment above the lower maximum, and the higher bidder wins — having never revealed how far they were prepared to go. You are never charged your maximum unless someone pushes you there.
Getting the most from it
- Set your true ceiling. The figure should be the most you would pay without regret — not a tactical lowball you intend to raise later.
- Use round, honest numbers. Bidding to $5,050 instead of $5,000 quietly wins more ties than you would expect.
- Watch the reserve. If a lot has not met its reserve, your proxy will climb to clear it before it starts competing with other bidders.
- Leave it early. A maximum placed during the viewing days carries exactly the same weight as one placed in the final minute — without the risk of a dropped connection.
Used well, proxy bidding turns the saleroom from a test of nerve into a test of judgement. Decide what a lot is worth to you, enter it once, and let the system defend your position right up to the fall of the hammer.
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