Is Ketel Marte [Chrome Black Refractor] #KM worth grading?
Baseball · Baseball Cards 2014 Bowman Prospect Autograph · full price guide →
Worth grading — even a PSA 9 beats raw
A Grade 9.5 Ketel Marte [Chrome Black Refractor] #KM sells for $280 against $39.00 raw: a $241 spread, 7.2× the ungraded price. Even a PSA 9 ($195) clears the raw price after an economy-tier ~$25 fee, so a near-miss still comes out ahead. Centering is the usual reason a clean copy misses the 10 — measure it before you submit.
- Raw (NM)
- $39.00
- Grade 9.5
- $280
- PSA 9
- $195
- Gem premium
- 7.2×
- As of
- Sep 4, 2026
Break-even by outcome and fee
| If it comes back… | Sells for | Economy / bulk (~$25.00) | Standard (~$50.00) | Express (~$150) |
|---|---|---|---|---|
| Gem — Grade 9.5 | $280 | +$216 | +$191 | +$91.00 |
| PSA 9 | $195 | +$131 | +$106 | +$6.00 |
Net = sale price − $39.00 raw value − fee. Fee tiers are illustrative; plug your grader's current price into the calculator below.
Expected value — how often does it need to gem?
| Chance it gems | Expected sale | Expected net (standard fee) |
|---|---|---|
| 25% | $216 | +$127 |
| 50% | $238 | +$149 |
| 75% | $259 | +$170 |
Even a miss (a 9) beats selling raw after the standard fee — the gem rate only decides how much you win by.
Which grader pays the most — and what a 10 takes
All centering standards →| Grader | 10 sells for | vs best | Front centering for a 10 | Back |
|---|---|---|---|---|
| BGS 10 | $250 | best | 55/45 | 70/30 |
Tolerances are each company's published centering standard for its top grade; surface, corners and edges must also be clean. Centering is the one you can measure yourself before you pay.
Full grade ladder
Raw conditions & history →Run your own numbers
Should I pay this?
Enter the seller’s asking price to see your net outcome per grade.
Other 2014 Bowman Prospect Autograph cards worth checking
Full set checklist →![Mookie Betts [Chrome] #MB 2014 Bowman Prospect Autograph card](https://i.ebayimg.com/images/g/6h0AAeSwDTBqVZ9X/s-l500.jpg)
Grading Ketel Marte [Chrome Black Refractor] #KM — FAQ
Is Ketel Marte [Chrome Black Refractor] #KM worth grading?
A Grade 9.5 Ketel Marte [Chrome Black Refractor] #KM sells for $280 against $39.00 raw: a $241 spread, 7.2× the ungraded price. Even a PSA 9 ($195) clears the raw price after an economy-tier ~$25 fee, so a near-miss still comes out ahead. Centering is the usual reason a clean copy misses the 10 — measure it before you submit.
What centering does Ketel Marte [Chrome Black Refractor] #KM need for a BGS 10?
BGS publishes 55/45 front and 70/30 back centering as the tolerance for a 10 (Gem Mint). Off-center copies are capped below the top grade regardless of surface — measure yours before paying the fee.
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