What is card grading?
Card grading is the professional evaluation of a trading card's authenticity and condition. A grader inspects the card, assigns a numeric grade — almost always on a 1–10 scale — and seals it in a tamper-evident holder (a "slab") with a unique certification number that anyone can verify online.
A graded slab turns a subjective "it's near mint" into an objective, portable, and provable standard that buyers, sellers, and auction houses all recognize.
Why grade your cards?
Grading does four things at once: it proves authenticity, it locks in a condition standard, it protects the card in a sealed holder, and it unlocks resale value and liquidity. A high grade on the right card can multiply its market value, and a verifiable cert makes it far easier to sell or insure.
How card grading works
Every grader follows roughly the same path. Here's how it works at MAS:
- 1Submit your cards online and declare each card's value.
- 2We receive and log every card against your submission.
- 3Specialists grade and encapsulate each card in a tamper-evident slab.
- 4We certify and return your cards with a live population entry you can verify.
See the full grading process and the MAS grading standard.
The 1–10 grading scale
Most graders, including MAS, use a 1–10 scale: Gem Mint 10 at the top down to Poor 1, often with half grades and an Authentic designation for altered or trimmed cards. A grade reflects four independent factors — centering, corners, edges, and surface — and the final grade is typically held back by the weakest of them.
Dig deeper: the full grading scale and how a grade is determined.
How much does card grading cost (and how long)?
Grading fees generally range from around $15 to $150+ per card, depending on the company, the service level you choose, and the card's declared value. Turnaround can run from a few business days on express tiers to several months on bulk or economy tiers, depending on backlog.
Compare MAS service levels, prices, and turnaround on the Submit page.
Is grading worth it?
Grading pays off when the math works. Two rules of thumb the hobby uses:
- The $50 rule: as a rough starting point, consider grading cards with a raw market value of about $50 or more.
- The 3x rule: aim for an expected graded value of at least 3x the raw value plus all grading, shipping and insurance costs.
- Check real sold comps at the grade you realistically expect — not the best-case scenario.
- Use population data to see how common your card already is at your target grade; high populations mean smaller premiums.
For low-value commons or visibly damaged cards, a toploader or sleeve is usually the smarter choice than paying grading fees.
What cards should you grade?
Trading card games now make up the majority of grading volume, but sports cards remain hugely valuable. MAS grades them all:
Sports cards
Baseball, basketball, football, soccer and more — from vintage rookies to modern parallels and autographs.
Pokémon (TCG)
The largest grading category today — base set chase cards, modern alt-arts, and sealed hits.
One Piece (TCG)
One of the fastest-growing games in grading, with manga-art rares and tournament staples.
Magic: The Gathering
Dual lands, reserved-list staples, and modern showcase cards worth protecting and proving.
Other TCG & non-sport
Yu-Gi-Oh!, Lorcana, Digimon, and non-sport sets — if it's collectible, it's worth grading when the value is there.
How to choose a card grading company
With so many options, focus on what actually protects your card's value:
- Market recognition and resale liquidity — will buyers trust and pay for the slab?
- Verifiable certification — can anyone confirm the grade online in seconds?
- A transparent, public population registry you can actually check.
- Tamper-evident encapsulation that protects the card and the grade.
- Clear pricing, turnaround, and declared-value handling.
- Authenticity you can witness — bonus points for on-site, watch-it-happen grading.
See how MAS stacks up in our grading comparison, and why witnessed certification is a MAS difference.
How to verify a graded card
A grade is only as good as your ability to prove it. Every MAS card carries a unique certification number — enter it on the cert lookup to instantly confirm the card, its grade, and live population data. No account required.
Card grading FAQ
What is card grading?
Card grading is the professional evaluation of a trading card's authenticity and condition, resulting in a numeric grade (typically 1–10) and a sealed, tamper-evident slab with a unique, verifiable certification number.
How much does it cost to grade cards?
Grading fees generally range from roughly $15 to $150+ per card depending on the company, the service level you choose, and the card's declared value. Compare MAS Grading's current service levels and prices on the Submit page.
How long does card grading take?
Turnaround ranges from a few business days on express services to several months on bulk or economy tiers, depending on the company's backlog. MAS offers multiple service levels with clear turnaround estimates at checkout.
Is grading cards worth it?
Grading is usually worth it when a card's raw value is around $50 or more and the expected graded value is at least 3x your total costs. For low-value or damaged cards, a toploader or sleeve is often the better choice.
What is the card grading scale?
Most graders, including MAS, use a 1–10 scale where 10 is Gem Mint and 1 is Poor, often with half grades and an Authentic designation. See the full MAS grading scale for details.
How do I verify a graded card?
Enter the certification number on the grader's lookup page. With MAS, visit the cert lookup to instantly confirm the card, grade, and live population data — no account needed.
Should I grade sports cards or Pokémon?
Both. Trading card games like Pokémon, One Piece and Magic now make up the majority of grading volume, but sports cards remain hugely valuable. Grade whatever meets the value and condition thresholds.
How do I choose a card grading company?
Look for market recognition, verifiable online certification, a transparent population registry, tamper-evident slabs, clear pricing and turnaround, and — ideally — grading you can witness in person.
Ready to grade your cards?
Submit sports cards, Pokémon, One Piece, Magic and more to MAS Grading — accurate grades, tamper-evident slabs, a live population registry, and instant online verification.