94
GrailScore
▸ Set tier
▸ Parallel /125
▸ Grade PSA 10
▸ Low pop count
✓ Auto-watchlisted
Sports cards · Pokémon · Yu‑Gi‑Oh! · MTG · One Piece
Stop searching.
Start collecting.
GrailBot searches eBay for the cards you collect, scores every listing, and puts the best ones on your watchlist, even when the seller misspells the name.
Shohei Ohtani Topps RCCharizard ex SIRLuka Dončić Gold PrizmMahomes RPA /99Umbreon VMAX Alt ArtLeBron Refractor /999Cooper Flagg Auto1st Ed Charizard PSA 9Blue-Eyes White DragonMonkey D. Luffy SRCaitlin Clark PrizmPikachu IllustratorShohei Ohtani Topps RCCharizard ex SIRLuka Dončić Gold PrizmMahomes RPA /99Umbreon VMAX Alt ArtLeBron Refractor /999Cooper Flagg Auto1st Ed Charizard PSA 9Blue-Eyes White DragonMonkey D. Luffy SRCaitlin Clark PrizmPikachu Illustrator
How GrailBot works
Four steps, on every scheduled run.
Set your searches up once. GrailBot repeats this on its own and learns from what you watch and skip.
- 1Hunt
Searches eBay for you
Add searches, or import a spreadsheet of them. Each one runs on your schedule.
- 2Uncover
Catches misspelled listings
“Chrizard.” “Prizim.” Typos get fewer bidders, so those cards often sell for less.
- 3Score
Rates every card 0–100
GrailScore weighs the set, parallel, grade, autograph and print run.
- 4Watch
Watchlists the best ones
Cards above your threshold go on your eBay watchlist. You decide when to bid.
Know instantly if it's worth watching.
Every listing is rated 0–100 based on set tier (Prizm, National Treasures, Base Set…), parallel rarity (Superfractor, Gold, Alt Art…), grading company and grade, autographs, patches, and print runs. Set a threshold once, and GrailBot handles the rest.
Elite
90+
Strong
75–89
Average
50–74
Below
<50
Scored right now
0
14 listings would auto-watch today
PSA 10
Rarity
94
Parallel
90
Set tier
92
Condition
88
Sales velocity
96
Same player. Same set. Very different cards.
GrailScore scores the details a quick scroll misses, so only the best ones reach your watchlist.
VS
61
GrailScore
▸ Set tier
▸ Parallel base
▸ Grade PSA 9
▸ Rookie
✕ Below your threshold
Three free tools, and GrailSense to tune them.
Search, finish sets and spot deals across sports and TCG. GrailSense learns your taste and tunes all three.
GrailSensePro
Learns what you collect from every search, add and skip, then tunes the tools below to it: players next to the ones you chase, better deals, rarer grails. Twice a week, GrailSense Picks brings you auctions from the big consignment sellers that match your collection.
Search Agent Free
Runs your eBay searches on a schedule, catches misspellings and watchlists the best matches.
Set up a searchGrail Sets Free
A player's landmark cards as a checklist. Cards you own tick off; the gaps become searches.
Browse Grail SetsTCG Sets + Deals Free
Full Pokémon set checklists with per-edition prices, and a flag when eBay is under TCGPlayer.
Track a setPSA 10
PSA 10
BGS 9.5
PSA 9
PSA 10
BGS 9
PSA 8
PSA 9
BGS 9
Pricing
The whole toolkit, free for every collector. GrailSense in Pro.
Free
$0/mo
The whole toolkit, free for every collector
- Search Agent, Grail Sets and TCG Sets
- GrailBot adds matches to your eBay watchlist
- 5 searches · 100 listings a day · 10 watchlist adds a day
- Scans every 12 hours · 7 days of run history
- Catches misspelled listings across 70+ curated subjects
- Collection tracking for up to 50 cards · daily recap email
Recommended
Pro
$9.99/mo
AI collection assistant + room to scale
- Everything in Free, plus:
- GrailSense: learns what you collect and tunes every tool to it
- AI Search Builder: describe what you want, get tuned searches
- AI Search Mode: every match checked against your criteria
- Top 3 AI-ranked picks in your daily recap
- 200 searches · 1,000 listings a day · 500 watchlist adds a day
- Scans hourly, runs on demand, sends real-time price alerts
- Collection tracking for 1,000 cards with weekly price refresh · 60 days of run history
Premium is coming later, with AI image analysis, a bid coach, a lot scanner and no limits. Want early access? Email admin@grailbot.ai.
All plans include the full toolkit and daily recap emails. No credit card required for Free.
Answers, before you ask.
How is GrailScore calculated?
GrailScore is a weighted 0–100 number derived from set tier, parallel rarity, grading company and grade, features (autos, patches, print runs), and recent sales velocity. The weights are tuned for collectible market dynamics. Pro users can set a minimum score threshold to auto-filter listings, and Pro-tier GrailSense personalizes the score for what you collect over time.
Does GrailBot bid for me?
No. GrailBot adds qualifying listings to your eBay watchlist so you decide when to bid. We never place bids on your behalf and never have access to your eBay payment methods.
How often does it scan?
Free scans twice a day (every 12h) on its own schedule. Pro scans every hour and can run on demand: start a scan whenever you want from the Searches page.
Which marketplaces are supported?
Currently eBay. Marketplace expansion is on the roadmap.
Will my account get flagged?
No. We act through the official eBay Developer Program. Your account stays in good standing.
Can I cancel anytime?
Yes. Subscriptions are month-to-month. Cancel from your settings page and keep access through the end of the billing period.
Your next grail is on eBay right now.
GrailBot checks while you sleep and adds it before someone else does.
Start for free →