Invaluable Scraper: Auction Lots, Prices Realized & Houses

What it does

Auction lots from Invaluable in two modes: sold lots with the price realized next to the low and high estimate, and upcoming lots with the current bid, bid count and watchers. Plus directories of auction houses and artists, with no bidder identifier ever leaving the Actor.

{
  "row_type": "lot",
  "lot_id": "205866906",
  "title": "Vintage Rolex Day-Date President Gold and Diamond Watch",
  "status": "sold",
  "auction_date": "2026-09-25T14:00:00.000Z",
  "currency": "USD",
  "estimate_low": 7000,
  "estimate_high": 10000,
  "price_realized": 13000,
  "bid_count": 17,
  "watcher_count": 50,
  "supercategory": "Jewelry",
  "category": "Watches, Women's",
  "house_name": "Charlton Hall",
  "location": "West Columbia, SC, US",
  "country": "United States of America",
  "lot_url": "https://www.invaluable.com/auction-lot/vintage-rolex-day-date-president-gold-and-diamond-656-c-692359e70e"
}

Why this one

Use cases

• Price an object from sold comparables: price realized against the low and high estimate, sale date, house and full description.
• Build a price index for a maker, category or artist from prices realized in their original currencies.
• Source upcoming lots before the sale by keyword, category, estimate, country or house, sorted by ending soonest or most bids.
• Track demand for a category through bid counts, bidders, watchers and favorites on upcoming lots.
• Export the directory of about 6,900 auction houses with their country and number of upcoming lots.

Input

Every field has a default, and the defaults are deliberately small so a first run is cheap enough to inspect before you commit to a sweep. This table mirrors the Actor's own input schema field for field.

Output and fill rates

A field being in the schema is not the same as it having a value. The percentages below were counted on real runs; the sample sizes are in Measurements. Anything not listed here is not promised.

Every key is always present. A field that exists but is empty comes back as explicit null, so a parser never has to guess.

Datasets

Different record types go to different datasets, so the main table never carries columns that are blank on most rows.

Pricing

Pay per delivered result. Charges are applied as each row is produced rather than in a lump at the end, so an aborted run bills only for what it actually gave you.

Measurements

Each figure is shown with the method that produced it. A benchmark without a method is a marketing claim wearing a number's clothes.

What it will not do

Stated plainly so you can judge fit before spending anything.

• Invaluable's Terms of Use (§5.2 and §4.2) prohibit robots and data extraction without written permission, and the robots.txt header says the same. Anyone running the Actor should read those terms and make their own decision.
• On a sold lot page, an anonymous visitor was shown "Sold: Log in to view" when the developer checked on 1 October 2026; the price realized the Actor delivers comes from the search index and the page state, which are served without a session. Invaluable also sells access to its results database by subscription.
• Lot pages ignore robots.txt's `Crawl-delay: 10`: the Actor requests them at about 1.5 seconds per page per session. Search queries go to the search index host rather than to `www.invaluable.com`.
• Artist is filled on 10.9% of sold lots overall (43.4% in Fine Art), and the estimate's coverage swings between 70.8% and 91.7% depending on the sample.
• Sorting by price compares raw numbers across currencies, because nothing is converted. `usd_conversion_rate` appears on 66.7% of lot pages.
• The sale-type filter works only for upcoming lots: the site does not keep sale type filterable for past ones.
• Some sold lots carry an auction date a few days ahead of the result, because some houses publish results under the catalogue's closing date. The date is delivered as Invaluable shows it.
• Invaluable's counters are approximate: two queries on 23 September 2026 put sold lots with a price at 8.74 and 10.10 million.

Privacy

• The seller on Invaluable is always a registered auction house: 0 of 960 lots sampled had a seller that was not a house. House names, addresses and logos are business data and are delivered.
• No bidder, watcher or winner identifier is ever output, and no bidder's maximum bid. Only counts and a `has_winner` flag.
• Of 960 lot descriptions, 2.4% contained something shaped like an email and 4.5% like a phone number; in the sample they were the auction house's own contacts and are delivered as written.
• Removal requests: privacy@actorstack.dev

See also the data removal process.

Guides for this Actor

• Asking price vs price realizedTwo marketplaces, two kinds of price. Empire Flippers publishes what sellers asked, Invaluable publishes what auctions realized — and a comparables dataset that mixes the two up measures the wrong thing.
• Invaluable auction results dataPrices realized, estimates and live bids from Invaluable, with the coverage measured on 2,040 lots — and the Terms of Use and robots.txt that prohibit automated access, stated plainly.