Is Keon Clark #99 worth grading?
Basketball · Basketball Cards 1998 Upper Deck Black Diamond · full price guide →
Strong grading candidate — 44× premium in PSA 10
A PSA 10 Keon Clark #99 sells for $64.38 against $1.47 raw: a $62.91 spread, 44× the ungraded price. A PSA 9 ($16.06) only about breaks even after fees, so the case rests on gemming. Centering is the usual reason a clean copy misses the 10 — measure it before you submit.
- Raw (NM)
- $1.47
- PSA 10
- $64.38
- PSA 9
- $16.06
- Gem premium
- 44×
- As of
- Sep 3, 2026
Break-even by outcome and fee
| If it comes back… | Sells for | Economy / bulk (~$25.00) | Standard (~$50.00) | Express (~$150) |
|---|---|---|---|---|
| Gem — PSA 10 | $64.38 | +$37.91 | +$12.91 | −$87.09 |
| PSA 9 | $16.06 | −$10.41 | −$35.41 | −$135 |
| PSA 8 | $8.01 | −$18.46 | −$43.46 | −$143 |
Net = sale price − $1.47 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% | $28.14 | −$23.33 |
| 50% | $40.22 | −$11.25 |
| 75% | $52.30 | +$0.83 |
Break-even gem rate at the standard fee: about 73%. Centering is the usual reason a clean copy misses — measure it before you decide.
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 | $84.00 | best | 55/45 | 70/30 |
| PSA 10 | $64.38 | −$19.62 | 55/45 | 75/25 |
| CGC 10 | $39.00 | −$45.00 | 55/45 | 75/25 |
| SGC 10 | $39.00 | −$45.00 | 55/45 | 75/25 |
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.
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Grading Keon Clark #99 — FAQ
Is Keon Clark #99 worth grading?
A PSA 10 Keon Clark #99 sells for $64.38 against $1.47 raw: a $62.91 spread, 44× the ungraded price. A PSA 9 ($16.06) only about breaks even after fees, so the case rests on gemming. Centering is the usual reason a clean copy misses the 10 — measure it before you submit.
How much is a PSA 10 Keon Clark #99 worth compared with raw?
A PSA 10 Keon Clark #99 (Basketball Cards 1998 Upper Deck Black Diamond) sells for about $64.38 versus $1.47 for a raw near-mint copy — a 44× premium as of Sep 3, 2026.
Which grading company is best for Keon Clark #99?
By resale value, BGS 10 leads at $84.00, ahead of PSA 10 at $64.38. Fees and turnaround differ, so the best-paying label is not always the best net.
What centering does Keon Clark #99 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.
What gem rate makes grading Keon Clark #99 break even?
At a standard ~$50 fee, submitting Keon Clark #99 breaks even when it gems about 73% of the time (a miss assumed to sell at the PSA 9 price of $16.06).
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