Setting a starting bid and deciding whether to use a reserve are two of the highest-leverage choices an auctioneer makes, and both come down to knowing what an item is really worth. Set the starting bid low enough to draw competition and the reserve, if you use one at all, at the floor you genuinely will not sell below.
How to set a starting bid
A starting bid is bait, not a target. A low opening invites more bidders in, and competition, not the opening number, is what drives the price up. The instinct to open high to protect value usually backfires: a high start scares off the early bids that build momentum.
Set the opening as a fraction of the item's realistic value, and know that value before you set it. According to AIM (2025), manual auction cataloging throughput runs 15-25 lots per hour, and pricing every lot by hand research is part of what makes cataloging slow, which is why a grounded value estimate up front helps.
When a reserve makes sense, and when it does not
A reserve is a price below which the item will not sell. It protects a genuinely valuable consignment, but it comes at a cost: reserves suppress bidding, because bidders sense a wall and disengage. Use one only when an item's value is high enough that selling below a floor would be a real loss, and set it at that true floor, not at your hopes.
For most lots, no reserve and a low start will net more than a reserve and a high start. Reserve the reserve for the pieces that actually need it.
Ground both numbers in real sold prices
Both decisions rest on knowing what an item actually fetches, and the honest source for that is what comparable items have sold for, not what they are listed at. According to the National Association of Realtors, market value is determined from sold comparables, what comparable items actually sold for, not from asking or listed prices. According to Syl-Lee Antiques (2025), AI valuation tools tend to quote retail prices, while the same item sold at auction or to a dealer typically realizes 30-50% or more below that retail figure, so anchor to auction-realized comps, not retail.
A cataloging tool that returns a value estimate grounded in real sold comps gives you a defensible number to set the opening and the floor. Gavelist can attach a value tier and a low-to-high range to each lot, drawn from real sold prices, so the starting bid and any reserve start from evidence rather than a guess.
Frequently asked questions
What is a good starting bid for an auction lot? A fraction of the item's realistic value, set low enough to invite competition. The opening draws bidders in; the bidding, not the opening number, sets the final price.
Should I set a reserve price? Only for genuinely high-value lots where selling below a floor would be a real loss, and set it at that true floor. Reserves suppress bidding, so most lots do better with no reserve and a low start.
How do I know what to set the numbers at? Ground them in what comparable items have actually sold for, not asking prices. A value estimate built from real sold comps gives you a defensible starting bid and floor.
Sources
- National Association of Realtors, "Determining Asking Price." nar.realtor
- Syl-Lee Antiques, "Should You Use AI to Help You Price Your Antiques?" (2025). syl-leeantiques.com
- Auction Item Manager, "Tracking Cost Per Lot." aimhq.com
More: reserve price, defined and AI value estimates from a photo.