The Collector's Intelligence Platform
The Intelligence platform for collectors who refuse to settle. Search eBay across 14 countries in 8 languages. Track your collection. Verify authenticity. Free to start — paid tiers from $9.99/month.
Free to start · No credit card · Web, Mac, and iPhone
What Hunters Seek
Whatever you collect, Grail Den speaks your language.
Your Arsenal
Every module in the Den, built for obsessive collectors who demand precision, speed, and an unfair advantage. Your Den dashboard, in-app messages, and the resources library tie them together.
One search runs across all 14 eBay sites at once. Listing titles translate on demand into 8 languages, a Japanese or Korean query is translated to English before the search, every price is shown in your currency, and items most collectors never see come up.
14 eBay sites · Titles in 8 languages · Prices in your currencyCatalog every piece with photos, provenance chains, and condition grading. Track value over time. Generate insurance reports from your own replacement values. Know your collection's true worth, always.
Value Tracking · Insurance Reports · Provenance ChainsValues come from sold comps across major auction houses and marketplace history, with a signer database of 3,000+ names behind every lookup. Real prices anchored to recent transactions, not list prices.
Value from sold comps · 3,000+ signers · Live auction trackingSend Through-The-Mail (TTM) requests to celebrities, athletes, and public figures. The full curated address index is open to every collector, read live from the Grail Den database, for planning campaigns with confidence.
Scholar: 201K+ Addresses · Always UpdatedList and sell to collectors who already know what they are looking at. You stay the seller of record; Grail Den takes 8.5% of the sale as the standard commission, 7.0% for Hunters, 6.0% for Scholars. Every listing can carry an authenticator’s opinion, and the Sales Tracker keeps inventory, the sales ledger, and the profit center in one place.
Direct sales · Sales Tracker · Profit Center17,000+ signing events on record, refreshed daily from the convention circuit. Watch a signer's name and get an in-app alert when they are announced at a show or signing. Hunter and up.
17,000+ signing events · Daily refresh · In-app alertsTrack consignments and private sales end to end: the deal, the partners, the payments, and a ledger that actually closes. Proposals go out from the tracker and land as deals when they are accepted. Scholar tier.
Deals · Payments · Ledger · ProposalsEach piece records its COA provider and number, serial, provenance notes, appraiser and appraisal date, what you paid and what it would cost to replace. Export the whole collection as a CSV spreadsheet, or print the replacement-value report with each piece’s COA, serial, location and value, so the people who inherit it know what they have.
CSV export · Printable value report · COA & provenance on recordThe Scholar's Edge
Pro features that give you an unfair advantage in the hunt.
Submit a photo or eBay link. A working authenticator with deep experience in entertainment autographs examines the signature against signer exemplars on file, weighs era and signing context, and issues a documented opinion. Quick (24h), Rush (2h, 7am to 8pm PT), or Deep (3 days, with pen, signature condition, and item condition analysis). Multi-signed pieces priced per name.
Quick opinions by Screen Grade authenticators, $9 per item.
Not all sold comps are equal. Statistical filtering separates outliers from true market signals, so you see the real price, not the noise.
Bulk import your collection from eBay purchase history or CSV. Hours become minutes.
Choose Your Path
Start free. Upgrade when the hunt demands it.
| Compare the three paths |
Free The Apprentice$0
Start free, no card Start Free |
Most Popular
Collector The Hunter$9.99/ month
$99.90/year, save 17% Become a Hunter |
Power User
Pro The Scholar$14.99/ month
$149.90/year, save 17% Become a Scholar |
|---|---|---|---|
| Marketplace seller feeOn every physical-goods sale you list on Grail Den. | 8.5%The standard rate | 7.0%Discounted from the 8.5% standard rate. A $700 sale covers the membership. | 6.0%The deepest discount from the 8.5% standard rate. $600 a month in member sales covers the membership. |
| Global HuntSearch all 14 eBay sites at once, listings translated into 8 languages. US, UK, DE, FR, IT, ES, NL, PL, AU, CA, AT, CH, BE, IE. | ✓ | ✓ | ✓ |
| Visual searchDrop a photo, find the listing. | 5 / monthFree quota; purchase credits to go beyond. | UnlimitedPull every active listing across the global feed. Soft cap 100/mo for normal use; contact us if you hit it. | UnlimitedEverything in Hunter. |
| Collection vaultDocument the pieces you own. Photos, notes, and provenance fields per item. | 25 itemsYour starter collection. | 100 items | UnlimitedNo cap. The entire hoard. |
| Through-the-Mail databaseReference tool for identifying signed memorabilia. Vet celebrities by through-the-mail signing reliability. | Full | Full | Full |
| Beta accessNew collector tools as they ship. | ✕ | First in line | PriorityThe analyst toolkit unlocks automatically. |
The Den Awaits
Hunt smarter. Collect with confidence. Never overpay.
Enter the DenOpinions are the authenticator’s expert judgment, not a guarantee of authenticity. For high-value items ($2,500+), we recommend pairing with PSA, JSA, Beckett, or SWAU certification.
