Sudden death and soft close: how a live auction timer ends

The timer is chosen per item

When you start an auction you pick two things: how long the countdown runs, and which timer mode it uses. Durations run from ten seconds up to a couple of minutes, so you can move quickly through a tray of small items or give a headline piece room to breathe.

Both settings apply only to the item you are opening. The next item can run for a different length of time under a different mode, and there is no penalty for changing your mind between lots as you read how the room is responding.

Sudden death: the clock is the clock

In sudden death, the countdown runs down and stops. Whoever is leading when it reaches zero wins the item at the current price. A bid that reaches the server with a fraction of a second remaining counts. A bid that arrives after the end does not, however close it was and however much more that buyer was willing to pay.

The appeal is pace and predictability. Every item takes exactly the time you allotted it, so a show with forty items in an hour actually finishes in an hour. For fast-moving segments, low-value lots, and any run of show built around a fixed window, that certainty is worth a lot.

The cost is that sudden death rewards reaction speed and connection quality alongside willingness to pay. A buyer who would have gone higher but was a beat late has no way back in, and last-second sniping becomes a viable strategy rather than a gamble. Items in sudden death also tend to close a little lower, because the auction stops at whatever moment the clock happened to reach zero rather than at the point where genuine competition ran out.

Soft close: a late bid buys everyone more time

In a soft close, a bid landing inside the final ten seconds pushes the end of the auction back to ten seconds from that bid. If another bid arrives inside the new window, the clock resets again, and so on. The item only closes once ten full seconds pass with nothing new happening.

This is the standard anti-sniping mechanism, and it works by removing the thing snipers rely on. There is no last instant to hide in, because arriving at the last instant simply creates a new one. Anyone who wants the item badly enough always gets the chance to answer the bid that just beat them, which is what most buyers understand as a fair ending.

One detail is worth knowing, because it occasionally surprises people watching the clock. Only a bid that changes the public state of the auction extends it, meaning a bid that moves the displayed price or takes the lead. A bidder quietly raising their own private maximum without doing either of those things does not reset the clock. Without that rule, a losing bidder could hold an auction open indefinitely by nudging their own maximum a cent at a time.

What the choice does to your final price

A soft close generally produces the higher result on a contested item. When two determined bidders keep answering each other, every answer extends the auction, and the item closes at the point where one of them genuinely stops rather than at the point where the countdown happened to expire. You are letting demand set the ending instead of the clock.

Duration also means different things in the two modes. Under a soft close you can open with a short countdown without much risk, because any real interest will extend it. Under sudden death the duration is the entire auction: too short and you cut off buyers who were still deciding, too long and the room's attention drifts before the item closes.

If you are unsure, run a soft close and keep the opening countdown brief. It gives you the pace of a short timer with the ending of a long one.

Maximum bids work in both modes

Whichever mode an item runs in, buyers can bid with a private maximum. They enter the most they are prepared to pay, and the platform bids on their behalf at the smallest amount needed to stay in front, up to that maximum and no further. Nobody else sees the number, and the bidder does not need to be watching the countdown at all.

This matters most in sudden death, where a maximum is the direct answer to the timing problem. A buyer with a maximum in place cannot be beaten simply because someone else had a faster connection in the last second. When you open an item in sudden death, it is worth saying so on camera and telling viewers to set a maximum rather than trying to tap at the right moment.

Make one thing explicit when you explain it: a maximum is binding and can only be increased. A bidder cannot lower or withdraw it once it is placed, so it should be a number they are genuinely happy to pay rather than an experiment.

Choosing a mode for each item

Use a soft close as your default. It produces fairer endings, tends to reach a truer price, and generates far fewer complaints from buyers who lost an item in the last half second. For anything scarce, expensive, or likely to be contested, it is the obvious choice.

Reach for sudden death when the pace is the point: a long tray of low-value items, a fixed broadcast window you have to finish inside, or a fast segment where the speed itself is part of the entertainment. It is a legitimate format, not a lesser one, as long as everyone knows they are in it.

Whichever you pick, announce it before bidding opens. The countdown looks the same either way, and a buyer who expected an extension that was never coming will feel cheated by a result that was entirely correct. A single sentence at the start of the item prevents that.