Cardboard Journal's Take
Mana Grading
Publishes its reasoning for the grade, which almost nobody else does.
What Sets Them Apart
The widest TCG coverage of any grader on this site by a distance — Lorcana, One Piece, Union Arena, Weiss Schwarz, Flesh & Blood, Naruto Kayou and dozens more, with unlisted sets added on request. Grading runs through an AI system Mana calls Dragon Eye, which checks for trimming and inking and assigns provisional centering, surface, edge and corner scores before a human confirms them.
Tier
Our rating of how well the resale market actually recognises this grader.
Turnaround
20–25 days
A wide published ladder: 30 business days on the human-only tier, 20–25 on Standard AI, 3–5 on Express and 24 hours on Warp Speed. Reviewers report one to three weeks in practice.
Backlog
No backlog figure published.
What They Grade
- TCG
Marketplace Acceptance
Recognition is building rather than established, and concentrated in the TCG categories it serves. Not covered by eBay's Authenticity Guarantee. The broad title coverage is a real advantage for collectors whose cards the majors will not take.
Pricing
Around $18 per card.
The Slab
Reviewers single out the slab and label quality, particularly on Naruto Kayou, where Mana is one of very few graders covering the set at all.
Example slab shown for reference — not a card I personally own.
The Label
SubgradesFour, online only
Subgrades and the full defect report live in a free Mana Studio account rather than on the label, reachable by cert lookup.
Grader Use Cases
- Personal Collection
- Condition Documentation
- Protection & Preservation
- Display & Presentation
TCG only, and genuinely broad within it. The draw is the grade report and the breadth of sets covered, not resale.
Known Concerns
Publishing defect reasoning alongside the grade is genuinely unusual and worth more than it currently gets credit for — it is checkable in a way most grading is not. The open question is the one facing every AI-assisted grader: how the system handles surface under fixed lighting, where a human can tilt the card and a camera rig cannot. Review volume is strong but the sample is young.
On The Wire
What the hobby is saying about Mana Grading, with our read on what it changes for you.
Nothing on the wire about Mana Grading yet — this fills in as it's collected.
History
Based in Santa Ana, California. AI-assisted grading at around $18 a card, covering a broad TCG range including titles the majors largely ignore, such as Naruto Kayou.