★★★★★
Me ayudó mucho a saber el precio de libros que tenía en cada desde hace años que quería botar a la basura, es increíble!!!! Y sigue mejorando…!!!
Value rare books, manuscripts and fine prints in 30 seconds.
The only AI platform that cross-references 135,000+ real sales from Christie's, Sotheby's, Heritage, Bonhams and 20+ international auction houses. Professional estimate, PDF certificate, BookOracle Score™ rarity rating.
Start free3 valuations included per month · No credit card · 60 seconds
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Real sales in database
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International sources
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Average time per valuation
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PDF certificates issued
A living market, not a frozen price list.
Real average prices of original prints sold at auction since 2010, source: 22,000+ tracked lots. Refreshed nightly by our scrapers.
Want the chart for your author or category? Open the dashboard
What we value
Eight main categories, each with its own dedicated comparison engine.
Rare and antique books
From incunabula to the 20th century. Notable first editions, deluxe copies, authorial dedications.
First editions & signed copies
We identify edition state, variants and authentic signatures via visual analysis.
Manuscripts & autographs
Handwritten letters, medieval manuscripts, illuminated codices, signed historical documents.
Fine prints & posters
Original prints, lithographs, screenprints, art and film posters. Picasso, Warhol, Chagall.
Fine art photography
Vintage signed prints, limited editions. Avedon, Cartier-Bresson, Mapplethorpe, Newton.
Maps & atlases
Antique cartography, rare atlases, historical and geographic maps from the 15th to 19th century.
Illuminated manuscripts
Books of hours, psalters, devotional codices with miniatures, decorated vellum leaves.
Modern firsts & artist books
20th-century first editions, artist books, deluxe editions, French livres d'artiste.
How it works
Three steps, sixty seconds, a professional valuation in your hands.
1
Create your account
Free registration in 20 seconds, no credit card. You get 3 valuations per month, forever.
2
Upload photos or describe the piece
Up to 4 photos (cover, title page, dedications, details). The AI extracts title, author, year automatically — or type the data yourself.
3
Receive the valuation + PDF certificate
Estimate in EUR, low-high range, BookOracle Score™ rarity from 1 to 100, confidence level, real comparables. Signed PDF with permanent verification QR code.
A real example
Here's what a BookOracle valuation looks like. Every figure derives from documented sales, never a gut estimate.
Picasso, Pablo · Suite Vollard
Valuation range
€ 380.000 – 520.000
Confidence
High (green)
BookOracle Score™
94
Exceptional
Real comparables used
21 documented sales · 2018–2025
What our users say
Collectors, antiquarian dealers and auction houses use BookOracle for fast, documented valuations.
★★★★★
Very good estimate Near reality
★★★★★
Incredibile molto accurato mi ha aperto strade che non pensavo … consigliato !!!!!
★★★★★
Very good !!!
★★★★★
Ho usato BookOracle per stimare un'edizione del 1798 di Voltaire trovata in una soffitta a Mantova. Il certificato PDF è stato accettato senza obiezioni dall'assicurazione e dall'asta che l'ha venduta a 4.200€. Lo strumento più serio che ho provato, e ne ho provati molti.
★★★★★
Als Antiquarin in München brauche ich schnelle, dokumentierte Schätzungen für Versicherungen. BookOracle liefert in Sekunden, was sonst Stunden mit AbeBooks-Recherche bedeutet. Der Score-Algorithmus ist transparent und die Vergleichspreise sind konsistent mit unseren Großhandelspreisen.
★★★★★
Outil très utile pour préparer mes catalogues de vente. La fourchette de prix est généralement très proche du marché — j'ai testé sur 30 livres dont je connaissais déjà la valeur réelle. Manque encore une intégration avec mon ERP, mais l'API arrive bientôt paraît-il.
★★★★★
Sono una ricercatrice universitaria e mi occupo di archivi familiari ottocenteschi. Avere uno strumento che mi dia in 30 secondi una valutazione preliminare con confronti d'asta documentati mi fa risparmiare giornate di lavoro. Il punteggio di rarità è spesso allineato con i cataloghi specialistici.
★★★★★
I run a small auction in upstate New York and I deal with a lot of estate-sale lots. BookOracle helps me triage what's actually worth cataloging vs. what should go in a bulk lot. Saved me about 6 hours per sale on average. Worth the Pro subscription many times over.
Simple, transparent pricing
Start free, upgrade to Pro when you need more. Cancel anytime.
Free
To get started and try the quality of our valuations.
€0
- 3 valuations per month
- Basic PDF certificate
- Limited comparables
Most popular
Pro
For serious collectors and antiquarian dealers.
€29
/ month
- 100 valuations per month
- PDF certificate + verification QR
- Full comparables + history
- Excel catalog export
Pro Plus
For professional dealers and small auction houses.
€150
/ month
- Unlimited valuations
- Everything in Pro, plus priority
- API access for integrations
- Dedicated email support
Enterprise
For large auction houses, museums, galleries. Fully tailored.
Custom
- Unlimited volumes
- Onboarding and training
- Contractual SLA + account manager
Professional Market Reports
In-depth analysis tailored for professionals, auction houses and institutions. Verified real data. 48-72 hour delivery.
Custom quote
Category Report
Full analysis of a category: rare books, photography, posters, autographs, design. Prices, trends, records, top sales, 5-year trajectory. Generated from real international auction data.
Request a quote →
Custom quote
Author or Artist Report
Complete market for a specific author or artist. All documented sales, absolute records, price trends, liquidity, benchmark vs. reference category.
Request a quote →
Custom quote
Portfolio Valuation
Analysis of your portfolio against today's market. Estimated current value, liquidity per piece, strategic advice on timing and optimal sale channel.
Request a quote →
Custom quote
Global Market Report
Complete overview of the rare-book and works-on-paper market. Volumes by category, average prices, leading auction houses, rising and falling categories, records of the year.
Request a quote →All reports include verified real data from international auctions (Christie's, Sotheby's, Swann, Gonnelli, Wannenes and 20+ other auction houses). Reports generated automatically with AI. Delivery within 48-72 hours of request.
From our Journal
News, market analyses and public valuations of remarkable pieces, written by our engine with real data.
2026-05-27
Vat.lat.97: Thirteenth-Century Psalter Commentary in Vatican Hands
A forensic study of Peter the Lombard's exegetical legacy in a prestigious Paris-trained manuscript, with market implications for Parisian thirteenth-century theology codices.
Read the article →2026-05-25
Petrarch's Consolation in German: The 1551 Brant Edition
Sebastian Brant's vernacular translation of Petrarch's remedies for fortune finds new scholarly urgency through Bavarian State Library holdings and digital recovery.
Read the article →2026-05-24
Venetian Proclamation of 1621 on Grain Trade: Document of the Magistratura alle Biaue
Rare printed edict of the Serenissima regulating cereal supply, with woodcut of the Lion of Saint Mark
Read the article →Frequently asked questions
How accurate is BookOracle's AI valuation?
For books with at least 3 recent comparable sales, BookOracle is typically within ±20% of the actual hammer price — comparable to a specialist with 10+ years of experience. For ultra-rare items with no recent comparables, the range widens and the BookOracle Score™ flags the lower confidence. Every valuation is an estimate, not a guarantee.
What rare books can I value with BookOracle?
BookOracle is optimized for the international antiquarian market: first editions, signed copies, illuminated manuscripts, autograph letters, vintage posters, fine photography, antique maps and prints. Modern paperbacks and mass-market books generally have no resale value and are outside our scope.
Is the PDF certificate legally recognized?
The certificate is a professional valuation report, not a legal appraisal. It is widely accepted for insurance documentation, sales listings, customs declarations and estate inventories. For court proceedings or contested estates, a sworn appraiser may still be required — but the BookOracle PDF is a strong starting document.
How is the BookOracle Score™ calculated?
The score combines six signals: known copies in institutional collections, dispersion of recent auction prices, item age, edition desirability points, condition sensitivity, and market liquidity (how often a comparable sells). The output is a single 1-100 number designed to be intuitive: 90+ is museum-grade, 70-90 is highly collectible, 40-70 is collectible, under 40 is common.
Can I get a free book appraisal online?
Yes — every BookOracle account includes 3 free valuations per month, no credit card required. Each free valuation includes the full price range, BookOracle Score™ and downloadable PDF certificate. If 3 isn't enough, paid tiers start at €29/month.
Do you store my photos?
Photos are processed for valuation and then deleted from our servers within 30 days unless you save the valuation to your account. We never sell or share user data, and we are GDPR-compliant. Full details in our Privacy Policy.
Where does the comparable price data come from?
We aggregate publicly available auction results and dealer listings from 20+ international sources (Christie's, Sotheby's, Heritage, Bonhams, AbeBooks, Vialibri and others), refreshed continuously by automated harvesters. We add historical archives and our own curated database of rare-book bibliography for edition identification.
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3 free valuations per month, forever. No credit card. No commitment.
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