How many lots should a charity auction have? The 12 to 20 rule

Short answer: 12 to 20 lots for a typical evening of 50 to 150 guests, of which no more than 6 sold live from the stage. If your list is longer than that, you will almost certainly raise more by cutting it. Here is the reasoning.

Attention is the real currency

Every lot competes for the same limited pool: your guests' attention and their evening budget. A guest at a fundraiser has, mentally, two or three lots they care about and a rough sum they are willing to spend. With 15 lots, the room's attention concentrates and several bidders collide on the same items. Collision is what drives prices past value. With 40 lots, the same attention and money spread thin: many lots get one bid or none, and the average price sags toward the starting bid.

What too many lots looks like

• The catalogue takes ten minutes to read, so most guests never finish it.
• Similar lots cannibalise each other. Three restaurant vouchers split the diners three ways.
• The silent close becomes unmanageable: nobody can track 40 countdowns.
• Checkout slows, because more winners means more queues and more admin.

The shape of a good catalogue

Think in three bands. Two to four headline lots worth 300 euros or more, sold live: these set the ceiling and give the evening its stories. Six to ten middle lots worth 50 to 250 euros: this band produces most of your total. Three to six accessible lots under 50 euros: these let every guest win something and keep the room generous. That is a catalogue of roughly 12 to 20, on purpose.

How to cut without offending donors

Cutting donated lots feels rude, but there are gentle ways.

• Bundle. Three small beauty items become one pamper basket. Two 25 euro vouchers from the same street become a night out package. Bundles concentrate bids and flatter the donors, who share a bigger price.
• Move small items to a raffle or a fixed-price sale table. A 15 euro candle raises more as a 5 euro raffle line than as an auction lot with one bid.
• Hold some donations for next year, with the donor's blessing. Donors mostly want their gift used well, not used immediately.

Adjust for your room size

Under 40 guests, lean smaller: 8 to 12 lots. A tiny room cannot sustain bidding wars on twenty fronts. Above 200 guests you can stretch toward 25 silent lots, because the attention pool is deeper, but the live block should stay at five or six regardless. Live lots cost two to four minutes each, and half an hour of live auction is the most any room enjoys.

A simple test for each lot

Ask: can I name three people in the room who would want this? If yes, keep it. If you can only name one, that lot will sell at the starting bid at best; bundle it or raffle it. If you can name none, thank the donor and route it elsewhere.

On auctiontool.ai, bundling is just editing the catalogue, and the live screen keeps even a 20-lot silent auction easy to follow, with each lot's current bid updating in real time. Flat pricing from €99 is on the pricing page, whatever your lot count.