The one question
Early accessShould you pay to have this card graded?
Grading costs real money per card, plus shipping both ways, and takes weeks. What comes back depends on a grade nobody can know in advance — so collectors guess, and a guess about a card worth hundreds is an expensive way to decide.
This replaces the guess with three things you can check, and then shows you the arithmetic it did with them.
No account, nothing to install. It never predicts a grade — the grade you expect is the one input that is yours. Compare the graders instead, or open the collection.
The SlabScore platform is live and free while in early access. The prices, fees and arithmetic are running now, and new features ship regularly. Sign up.
- 35%Profit potential
- 25%Market depth
- 20%Grade premium
- 20%Downside
Umbreon VMAX · Evolving Skies — recorded sales, PSA’s market
Ungraded (NM)
$2,404.28
PSA 8
$2,102.76
PSA 9
$2,182.07
PSA 10
$4,258.15
The recorded ladder this build is tested against — sold prices, not asking prices. Your card gets the same table, live, at every grade.
The same question, answered on a real card
Every figure below is what the engine returns for this card, from the prices and sales recorded with it.
Umbreon VMAX · Evolving Skies · Holofoil · asked at PSA 10
Grading this card adds $916.31.
What you put in, what comes back
What you paid for the card is not in here. The question is forward-looking and what you paid is spent either way. Your own profit and loss sits beside the Grading Outlook, never inside it.
How that becomes 59 out of 100
- Profit potential
- 27% return at PSA 10
- Grade premium
- $916.31 added over selling it raw ($2,404.28)
- Market depth
- 162.0 sales/month at PSA
- Downside
- −29% gain if it grades 9
Each part is rated out of 100 on its own curve, then weighted. Every curve, and what moves it.
PSA sales counted once, on 2026-09-14; graded at the Super Express tier. Asked at PSA here — the same arithmetic runs for TAG, CGC, BGS, ACE, each in its own market and at its own fee. Compare them.
It will not tell you whether your card gets a 10.
No gem-rate odds, no population-derived probability, no confidence rating. You say which grade you would bet on, and every figure above is conditioned on that answer. Move the grade and every one of them moves with it, the recommendation included.
Where it says it does not know
Both of these are on the card above, and neither was staged for the page.
A missing number is never a zero
A price nobody has and a card worth nothing lead to opposite decisions, so they never share a cell. The card above has one figure missing, because nobody entered it:
The dash names which kind of missing it is and links to what that kind means. A price nobody has recorded, a grader that does not cover the game, and a figure we failed to load are three different facts, and each one is said as itself.
A contradiction is reported, not repaired
Real sold data is not always in order. On this card’s own recorded ladder, a higher grade sold for less than the grade beneath it:
Both cannot be right and we cannot know which is wrong, so the conflict is shown and you still get the answer at the grade you asked about.
Start with one card you have been wondering about.
Search for it at the top of this page, say which grade you would bet on, and read the working. If you already keep a list, import a CSV and every row comes back with what it matched and what it is worth grading.