In-Depth Guide
Card Grading,
Explained
Grading turns a subjective opinion about a card's condition into a standardized, tamper-evident number that buyers trust. This guide breaks down how the major grading companies work, what the 1–10 scale actually means, what it costs, and — most importantly — how to decide whether a card is worth grading at all.
What Card Grading Is
Card grading is the process of sending a card to a third-party company that evaluates its condition, assigns a numeric grade, and seals it in a tamper-evident plastic holder — usually called a "slab." The slab is labeled with the card's details, a unique certification number, and the grade.
The point of grading is trust. Condition is the single biggest driver of a card's value after the player or character itself, but "near mint" means different things to different people. A professional grade replaces that disagreement with a consistent standard, so a buyer on the other side of the country can bid confidently on a card they've never held.
Grading also provides authentication. Reputable graders verify that a card is genuine and unaltered — not trimmed, recolored, or restored — which matters enormously for vintage and high-value cards where counterfeits and doctored cards exist.
Raw vs. graded: A "raw" card is ungraded. The same card in a graded slab almost always sells for more — sometimes many times more — because the grade removes the buyer's uncertainty about condition and authenticity.
The 1–10 Grading Scale
Most graders use a 1–10 scale, where 10 is essentially flawless and 1 is heavily damaged. Half-point grades (like 8.5) are common at some companies. Here's what the upper end of the scale generally represents:
| Grade | Name | What It Means |
|---|---|---|
| 10 | Gem Mint | Virtually perfect. Sharp corners, perfect centering, full gloss, no visible flaws under standard inspection. The grade collectors chase. |
| 9 | Mint | Excellent card with one minor flaw — slightly off-center, a tiny print speck, or microscopic corner wear. |
| 8 | Near Mint–Mint | Very nice card with a couple of minor issues, such as slightly fuzzy corners or modest centering. |
| 7 | Near Mint | Light wear visible on close inspection — minor corner softness or a small surface flaw. |
| 5–6 | Excellent | Moderate, clearly visible wear: rounded corners, light scratches, or noticeable off-centering. |
| 1–4 | Good to Poor | Heavy wear, creasing, staining, or damage. Usually only worth grading for rare vintage cards. |
The jump in value between adjacent grades is rarely linear. For modern cards, a PSA 10 can be worth several times a PSA 9 of the same card, because gem-mint copies are far scarcer. This "grade cliff" is why submitters obsess over whether a card will come back a 9 or a 10.
What Graders Look At
Graders evaluate four core attributes. A card's final grade is limited by its weakest attribute — perfect corners won't save a card that's badly off-center.
How evenly the image sits within the borders, measured front and back as a ratio (e.g. 60/40). The most common reason a card misses a 10.
Sharpness of all four corners. Even slight fraying or a soft tip is visible under magnification and pulls the grade down.
Cleanliness of the card's edges — no chipping, whitening, or nicks. Dark-bordered cards show edge wear easily.
Scratches, print lines, dimples, indentations, stains, and gloss. Includes print defects from the factory.
A card can also be flagged as altered — trimmed, recolored, cleaned, or restored. Altered cards either receive no grade or are slabbed with an "Authentic — Altered" designation, which severely reduces their value.
PSA vs BGS vs CGC vs SGC
Four companies dominate trading card grading. They use similar scales but differ in reputation, specialty, label design, and how the market prices their slabs.
PSA (Professional Sports Authenticator)
The largest and most recognized grader, especially for sports cards and Pokémon. PSA slabs are the most liquid — they tend to sell fastest and command the strongest prices in most categories. PSA uses whole-number grades from 1 to 10 (with a rare half-grade at PSA 1.5). For most modern cards, a PSA 10 is the benchmark the market prices against.
BGS (Beckett Grading Services)
Known for its detailed approach: BGS prints four subgrades (centering, corners, edges, surface) on the label, giving buyers a breakdown behind the overall grade. Its top tier is the coveted BGS 10 "Black Label" — a perfect 10 across all four subgrades, which is extremely rare and commands a premium. BGS is especially popular for modern, high-end, and autograph cards.
CGC Cards
Part of the Certified Collectibles Group (well known in comics and coins), CGC expanded into trading cards and has grown quickly, particularly with Pokémon and other TCGs. It's often praised for sharp, modern slab design and competitive turnaround, though its slabs can price slightly below PSA in some categories.
SGC (Sportscard Guaranty Company)
A long-established grader respected especially for vintage sports cards. Collectors favor SGC's distinctive black-matted slab for older cards, and its turnaround has historically been fast. SGC is a strong choice for pre-1980 cardboard.
Which should you choose? For most modern sports and Pokémon cards, PSA offers the best resale liquidity. For high-end modern cards where subgrades add value, BGS is popular. For vintage, SGC and PSA are both well respected. The "best" grader is partly about which slab your specific card's buyers prefer.
Cost & Turnaround
Grading isn't free, and pricing is tiered by how fast you want results and how valuable the card is. Most companies require higher-value cards to use higher (more expensive) service tiers, because the grade carries more financial responsibility.
The cheapest per-card pricing, intended for lower-value cards and larger submissions. Turnaround is the slowest and can stretch to many weeks or months during busy periods.
A middle ground on price and speed, with declared-value limits that suit most mid-range cards.
The fastest turnaround and the highest declared-value limits, priced for valuable cards where speed matters. Can cost many times the economy rate per card.
On top of the grading fee, budget for insured shipping both ways and, for valuable cards, the cost of proper protection (penny sleeves, card savers, and a sturdy box). Grading-company pricing changes over time, so always confirm current rates and turnaround estimates on the grader's own site before submitting.
Is Grading Worth It?
Grading adds value only when the increase in price exceeds the total cost of grading and shipping. Run through these questions before you submit:
The value boost from grading is concentrated at the top of the scale. A likely 9 or 10 is worth grading; a card with obvious wear usually isn't.
Grading a $3 common rarely pays off. The math works best on cards already worth more than the grading cost — or near a steep grade cliff.
Check whether graded copies of this card actually sell. Some cards have a thin graded market, so a slab won't help you resell.
Graded slabs protect a card physically and preserve its condition, which matters if you plan to hold a key card for years.
A simple way to decide: look up recent sold prices for the card both raw and at the grade you expect. If the graded sold price minus the raw sold price minus grading and shipping costs is comfortably positive, grading is worth it. You can use Card Appraiser to pull current market data for both before you commit.
How to Submit a Card
Sign up on PSA, BGS, CGC, or SGC's website. Submissions are managed through your online account, where you'll declare each card and its value.
Pick the tier that matches your card's declared value and how quickly you need it back. Higher-value cards are required to use higher tiers.
Place each card in a soft penny sleeve, then a semi-rigid card saver (not a top-loader, which most graders disallow). Never tape the card itself.
Pack cards snugly in a small box with the printed submission form, and ship with tracking and insurance for the declared value.
Your account shows each stage (received, grading, assigned). When finished, the graded slabs ship back to you with their certification numbers.
Common Mistakes to Avoid
A few avoidable errors cost submitters money every day:
The most common mistake. If a card isn't worth much raw and won't grade high, the fee eats any gain.
A card can have perfect corners and still cap at an 8 because it's off-center. Inspect centering before submitting.
Any attempt to alter a card can get it flagged as altered, destroying its value. Submit cards exactly as they are.
If a valuable card is lost in transit and you skipped insurance, you absorb the full loss. Always insure for declared value.
Bottom line: Grade selectively. The collectors who profit from grading are the ones who pick high-grade, in-demand cards and confirm the resale math before they ever box up a submission.
Look up live raw and graded sold prices before you submit. Card Appraiser pulls real eBay market data so you can run the grading math in seconds — free.
Check a Card's Value