Stop scrolling endless listings. GrailISO lets you broadcast exactly what you're hunting — and lets the card find you. Built for serious collectors.
One end-to-end platform — discovery, authentication, and delivery.
Tell us exactly what you're hunting. Set, parallel, grade, price — as specific as you need.
Owners with that card in their collection are automatically alerted. They respond anonymously.
Buyer approves the offer. Funds held in secure escrow. GrailISO ships a prep kit to the seller.
Card arrives at our hub. Authenticated and optionally submitted to PSA, SGC, or BGS.
Your grail arrives slabbed in a premium GrailISO display. Worthy of the hunt.
Every other pricing tool is a rearview mirror — historical sales from last month. That's not a market. That's an archive.
GrailISO captures live buyer demand. See exactly what collectors are willing to pay today — the most accurate price discovery tool the hobby has ever had.
Subscription tiers for collectors, dealers, and investors give you data no one else has.
Every other platform starts with supply. We start with demand.
Post what you want. Sellers with that exact card get notified automatically — even if it's buried in a private collection.
Every card passes our verification hub before delivery. Trimmed cards, fakes, and condition misrepresentation never reach you.
Not historical — active demand. Know what collectors are paying right now, not what sold last quarter.
Secure escrow. Insured shipping. Full chain of custody from deal confirmed to your door.
PSA, SGC, and BGS submissions handled through one seamless process. No separate submissions, no waiting in line.
Your grail doesn't arrive in a bubble mailer. It arrives in a GrailISO display — presented like the trophy it is.
Founding members get free ISO listings and reduced transaction fees for life.
No spam. No BS. Just a heads-up when we launch.
We'll reach out when early access opens.
Welcome to the hunt.