How to Research Prices Realized Before You Bid

The best way to decide what to bid is to know what similar items have actually sold for. This guide is for buyers who want to research prices realized, compare them fairly, and use the results to set realistic limits.

What "prices realized" means

Prices realized are the actual amounts lots sold for at past auctions. They are more useful than asking prices, which show what sellers hope to get, and more useful than estimates, which are opinions given before a sale. A sold price reflects what a real buyer was willing to pay on a particular day.

Where to find sold prices

• Auction company archives: Many auction houses post past results on their websites, often searchable by keyword.
• Auction price archives and databases: Some services collect results from many auction houses. Some are free, while others require a subscription.
• Sold listings on online marketplaces: Filtering for completed or sold listings shows what buyers actually paid, not just what was listed.
• Price guides: Printed and online guides give general ranges for many categories. They can be useful starting points but may be out of date.
• Specialist dealers and collector clubs: People who handle the material regularly often have a good sense of current demand.

Identify the item correctly first

Research only works if you are comparing the right things. Before searching, gather the details that matter for your category: maker, model, pattern, size, date, material, edition, marks or signatures. If you are not sure what an item is, you can identify an item from a photo as a starting point, then confirm through other sources.

Compare like with like

Small differences can mean big price differences. When you find past results, check that they truly match:

• Condition: Damage, repairs and missing parts usually lower prices.
• Size and form: A larger or rarer form of the same pattern may sell very differently.
• Originality: Original finish, parts and packaging can matter a great deal.
• Authenticity and attribution: A confirmed maker often brings more than "attributed to" or "in the style of."
• Provenance: A documented history can add interest.

Check what the price includes

Some results show the hammer price only, while others include the buyer's premium. Look for a note on the results page that explains which. If you are comparing results across companies, try to put them on the same basis so you are not misled by the difference.

Look at more than one sale

One result can be misleading. Two determined bidders can push a single lot far above normal, and a poorly attended sale can produce a low price. Look for several results over a reasonable period and note the range, not just the highest or lowest number. Also pay attention to how recent the results are, since demand for many categories shifts over time.

Consider the venue

Where an item sold affects its price. A specialist sale with a large catalog and online bidding may attract more serious collectors than a small local sale. The region can matter too, especially for large or regional items like furniture and folk art. Think about how the sale you are considering compares with the sales in your research.

Turn research into a limit

Once you have a sense of the range, decide where your item falls in it based on condition and quality. Then adjust for the buyer's premium, tax, shipping and any repairs to arrive at your maximum bid. Write it down. Research is most useful when it sets a firm number before bidding starts.

Keep your own records

Save screenshots or notes of results you find, with the date, source and a description. Over time, this becomes a personal reference for categories you buy often, and it helps you spot when a price is unusual.

Quick checklist

• Identify the item's maker, model, size and details first.
• Search auction archives and sold listings, not asking prices.
• Match condition, form and originality closely.
• Check whether results include the buyer's premium.
• Look at several recent results and note the range.
• Convert your findings into a written maximum bid.