What does grading actually do?
The loudest myth in the hobby is that a slab turns any card into a payday. Grading seals in the condition of the card you sent, and buyers still have to want that card, from that set, at that grade.
The grading fee pays for three things the grader does.
Is the card genuine?
Graders check the card stock, ink and holographic layers for counterfeits, trimmed edges, recoloring and replaced backs. The slab is their opinion that the card is genuine.
A 1–10 score both sides can check
“Mint” and “Near Mint” are words sellers choose. A score from 1 to 10 from PSA, BGS, CGC or SGC is a number both the buyer and the seller can look up.
A case that protects the card
The card is sonically welded into hard acrylic that resists everyday UV light and moisture, and it protects against the bent corner you get when a toploader hits the floor.
How to inspect a card at home
Do this under a desk lamp before you fill out a submission form. Graders score four areas, centering, corners, edges and surface, and the table shows what they look for in each one.
The centering simulator below shows how the balance of the left and right borders moves a card away from a Gem Mint 10, and a fingernail dent that only shows when you tilt the card to 45° can finish the job.
Drag the Slider to Test Centering Ratios
Centering is measured by comparing opposite borders, so 50/50 means the card sits dead centre in its own frame. Drag the slider to see what a factory shift looks like at each ratio.
The left and right borders measure the same. Centering is one of the four things graders score, and each company publishes its own tolerance for every grade, so read the standards of the company you plan to use rather than guessing from this number.
| What graders score | What they check | Flaws that cost a 10 | How to check at home |
|---|---|---|---|
Centering | Borders equal on the left and right, and on the top and bottom | Borders that lean noticeably to one side (70/30 or worse) | A phone camera grid or a clear ruler |
Corners | How sharp the four corner tips are | White specks (“whitening”) where ink chipped off the cardboard | A 10x magnifier or phone macro camera under an LED light |
Edges | How clean the four outer edges are | Silvering (foil showing along the border) or rough, fuzzy cuts | Raking light: tilt the card at 45° over a dark table |
Surface | A clean, scratch-free gloss and holographic face | Fingernail dents, print lines, roller marks or tiny creases | An LED flashlight held to the side, and a microfiber cloth |
Will grading this card make you money?
Before you mail anything, work out your net return with this formula.
Net return = graded sale price − (raw value + grading fee + insured shipping both ways + selling fees).
On modern cards, this is where the Mid-Grade Trap catches people. A card that comes back an 8 or a 7 often sells for less than the raw card, because buyers would rather gamble on an ungraded card they can play or submit themselves. The calculator below turns that formula around: give it your own numbers and it shows the price a graded copy has to beat before grading has paid for itself. It is arithmetic on what you enter, not a price quote, and it does not guess what grade the card would come back as.
Which grading company should you use?
Four companies grade most of the trading cards collectors buy and sell, and each has its own label, top grade and pool of buyers. Pick the company your buyers search for, whether they care most about fast resale, subgrades, error authentication or strong contrast on vintage cards, and let the look of the case in a photo come last.
Professional Sports Authenticator
Flagship Grade: Gem Mint 10
Why pick them: If you plan to sell a modern Pokémon or sports card, PSA usually brings the highest prices and fastest sales because most buyers collect PSA Set Registries.
Watch out for: Turnaround times can be slow on budget bulk tiers, and they charge "upcharges" if your card is worth more than the tier maximum after grading.
Beckett Grading Services
Flagship Grade: Pristine 10 & The Legendary "Black Label 10"
Why pick them: Collectors love the 4 subgrades (Centering, Corners, Edges, Surface). If a card gets a quad-10 subgrade, it earns the legendary BGS "Black Label", which can sell for astronomical sums.
Watch out for: A standard BGS 9 or 9.5 often commands less money than a PSA 10, and their slabs are noticeably thicker in storage boxes.
Certified Collectibles Group
Flagship Grade: Pristine 10 (Gold Label)
Why pick them: Known for comic books and pop culture, CGC has the clearest plastic slabs in the industry, fast budget turnarounds, and is the #1 authority for authenticating rare misprints and factory errors.
Watch out for: While their Pristine 10 gold labels command strong premiums, regular CGC 9s and 9.5s may trade at a slight discount compared to PSA.
Sportscard Guaranty Corporation
Flagship Grade: 10 Pristine / 10 Gem Mint
Why pick them: Famous for vintage sports and older cards. The black frame makes white and colorful card borders pop dramatically. Very consistent and fast turnarounds.
Watch out for: Smaller market share in modern Pokémon and One Piece compared to PSA, but highly respected among vintage collectors.
| Company | Top grade | How the slab looks | Best for | How fast it resells |
|---|---|---|---|---|
PSA | Gem Mint 10 | Classic red and white label | Selling modern Pokémon and sports cards; Set Registry collectors | Fastest, and the easiest to sell |
BGS (Beckett) | Pristine 10 / Black Label | Thick slab with four subgrades on the label | Flawless modern cards chasing a Black Label with four 10s | Very high (Pristine and Black Label) |
CGC Cards | Pristine 10 (Gold Label) | Crystal-clear case with a gold Pristine label | Factory errors, misprints, vintage display and fast bulk submissions | High and growing |
SGC | 10 Gem / Pristine | Matte black inner insert (“The Tuxedo”) | Vintage cards, where the black insert makes the borders stand out | Strong for vintage |
How to pack cards so they arrive safely
A card that could be a Gem Mint 10 can become an 8 in the mail if it rattles inside a rigid toploader and catches the top edge. Graders ask for flexible semi-rigid holders, so leave hard toploaders in your binder and mail the card in a Card Saver.
Soft Penny Sleeve
Slide the card into a clean, standard soft penny sleeve. Snipping about 1mm off the top corner of the sleeve lets the card slide in without catching a corner.
Semi-Rigid Card Saver + Pull Tab
Use a flexible semi-rigid holder (Card Saver 1 or similar). Stick a Post-it flag on the back of the penny sleeve so it sticks out about an inch, which lets the grader pull the card out without touching its edges.
Corrugated Cardboard Sandwich
Cut two clean pieces of stiff cardboard slightly larger than the Card Saver, sandwich the holder between them, and seal it with blue painter’s tape. Scotch tape and packing tape leave residue, so leave them out.
Bubble Mailer + Tracking
Put the cardboard sandwich in a bubble mailer or box and keep the receipt with tracking. For valuable cards, add signature confirmation and postal insurance.