Silent auction starting bids: what to set and why

If you only optimise one field in your auction, optimise this one.

The starting bid is the price at which bidding on an item begins — the lowest amount anyone can offer. It looks like a minor administrative setting. It is in fact the single decision most responsible for whether an item raises money or sits at zero all week, and zero-bid items are the largest recoverable loss in most silent auctions.

This page sits under the complete silent auction guide. For the other two numbers, see how to price auction items.

What a starting bid does

A starting bid does two jobs at once, and they pull against each other.

It puts a floor under the item — nothing can sell below it. And it sets the price of entry for the first bidder, which determines how likely that first bid is to happen at all. Raise it to protect the item and you make entry harder. Lower it to encourage entry and you lower the floor.

Most organizers instinctively weight the floor. The evidence says weight the entry.

The number: 40% of value

Open at roughly 40% of fair market value, rounded to something clean.

If you are unsure of an item's value, fix that first — see determining fair market value. A percentage of a bad number is a bad number.

Why the first bid is worth the most

Bidders behave differently before and after they have bid.

Before, they are evaluating: is this worth my money, is it worth my attention, will I actually use it. Most people resolve that question by doing nothing. After a bid, the item is theirs in a small but real sense, and being outbid registers as losing something they had rather than failing to gain something they wanted. That asymmetry is what produces bidding wars, and it cannot start until someone bids once.

So the opening number is not really a price. It is the cost of getting someone to cross from browsing into competing. Priced low enough, that crossing is easy and the item's real price gets discovered by the bidders. Priced high, the item never enters the market at all. More on the underlying behaviour in the psychology of auction bidding.

The 62% arithmetic

Here is why this compounds across a catalogue rather than mattering item by item.

Auctions hosted on 32auctions tend to realize around 65% of the combined fair market value of their items. Working backwards, a $10,000 goal implies about $15,385 in item value. Now take a single bid on every one of those items at 40%:

Sixty-two percent of the goal comes from nothing more than every item receiving one bid. The remaining 38% comes from competition, which you cannot manufacture reliably.

What you can control is the 62%, and it is controlled almost entirely by starting bids. Every item that finishes at zero removes its full share from that base. Ten dead items in a sixty-item auction is not a small problem — it is a sixth of your floor.

When to go above or below 40%

Treat 40% as the default and deviate deliberately.

Open higher when

• The item is in obvious high demand. Concert tickets, a sought-after experience, anything you already know several people want. Demand will find it regardless, and a higher floor saves bidding time.
• The auction is short. A two-day auction has fewer bidding cycles than a two-week one, so items need to start closer to where they should finish.
• The item's value is low. Below about $25, a 40% opening produces a starting bid too small to be worth the transaction. Round up.

Open lower when

• The item is unusual and needs explaining. A lower entry price buys the bidder's curiosity.
• Your audience is price-sensitive. A school auction reaching young families behaves differently to a black-tie gala.
• You have several similar items. Competing listings split demand, so each needs an easier entry point.

Rescuing a no-bid item

Halfway through your bidding window, pull the list of items with zero bids. This is the most actionable report in an online auction. One mistake we see repeatedly at 32auctions is organizers never opening it — and every item finishing at zero removes its full share from the 62% base above.

1. Lower the starting bid. Cut it meaningfully — a token reduction changes nothing. Going from 40% to 25% of value is a real signal.
2. Check the listing. No photo, a two-word description, or an unexplained restriction will kill an item regardless of price. See writing item descriptions.
3. Feature it. On 32auctions you can feature up to ten items at a time, which pushes them to the top of the item list and onto the main auction page. Rotate them.
4. Name it in your next message. A repriced item is a reason to email. "We have dropped the opening bid on the cabin weekend" is a genuine update, not filler.
5. Consider bundling. Three items nobody wants individually can become one package that works. See bundling auction items.

One warning for in-person auctions: crossing out and rewriting a starting bid on a printed bid sheet makes the item look rejected. Reprint the sheet or leave it alone.

Starting bid vs reserve vs Buy It Now

Three different controls, frequently confused:

For most items a well-chosen starting bid does the protective job a reserve is reached for, with none of the friction. See reserve prices and Buy It Now.

Starting bid mistakes

• Opening at half of retail because it feels fair. Fairness is not the goal. The first bid is.
• Using one flat opening for every item. "$20 to start on everything" prices your $500 items like your $50 ones.
• Opening at value on items you're attached to. The item you personally love is not exempt from the arithmetic.
• Setting it and never looking again. The zero-bid list exists. Open it.
• Odd numbers. $37 is arithmetically correct and psychologically worse than $40. Round.