![Tim Duncan [Refractor] #21 (Basketball Cards 2008 Topps Chrome) — is it worth grading?](https://i.ebayimg.com/images/g/qTQAAeSwDwtpj3gR/s-l1600.jpg)
Is Tim Duncan [Refractor] #21 worth grading?
Basketball · Basketball Cards 2008 Topps Chrome · full price guide →
Worth grading — even a PSA 9 beats raw
A PSA 10 Tim Duncan [Refractor] #21 sells for $355 against $46.33 raw: a $308 spread, 7.7× the ungraded price. Even a PSA 9 ($112) 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)
- $46.33
- PSA 10
- $355
- PSA 9
- $112
- Gem premium
- 7.7×
- As of
- Jul 11, 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 | $355 | +$283 | +$258 | +$158 |
| PSA 9 | $112 | +$40.56 | +$15.56 | −$84.44 |
| PSA 8 | $58.45 | −$12.88 | −$37.88 | −$138 |
Net = sale price − $46.33 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% | $173 | +$76.27 |
| 50% | $233 | +$137 |
| 75% | $294 | +$198 |
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 | $461 | best | 55/45 | 70/30 |
| PSA 10 | $355 | −$106 | 55/45 | 75/25 |
| CGC 10 | $213 | −$248 | 55/45 | 75/25 |
| SGC 10 | $213 | −$248 | 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.
Full grade ladder
Raw conditions & history →| Grade | PSA | CGC | BGS | SGC | Graded |
|---|---|---|---|---|---|
| 10 | $355 | $213 | $461 | $213 | — |
| 9.5 | — | — | — | — | $348 |
| 9 | — | — | — | — | $112 |
| 8 | — | — | — | — | $58.45 |
Run your own numbers
Should I pay this?
Enter the seller’s asking price to see your net outcome per grade.
Other 2008 Topps Chrome cards worth checking
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![Kobe Bryant [Orange Refractor] #24 2008 Topps Chrome card](https://i.ebayimg.com/images/g/fkIAAeSwfPlqKNHX/s-l500.jpg)
![LeBron James [Orange Refractor] #23 2008 Topps Chrome card](https://i.ebayimg.com/images/g/lLsAAeSwHNFqDZha/s-l500.jpg)
![Kobe Bryant [Xfractor] #24 2008 Topps Chrome card](https://i.ebayimg.com/images/g/2nQAAOSw5adm~sBG/s-l500.jpg)
Grading Tim Duncan [Refractor] #21 — FAQ
Is Tim Duncan [Refractor] #21 worth grading?
A PSA 10 Tim Duncan [Refractor] #21 sells for $355 against $46.33 raw: a $308 spread, 7.7× the ungraded price. Even a PSA 9 ($112) 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.
How much is a PSA 10 Tim Duncan [Refractor] #21 worth compared with raw?
A PSA 10 Tim Duncan [Refractor] #21 (Basketball Cards 2008 Topps Chrome) sells for about $355 versus $46.33 for a raw near-mint copy — a 7.7× premium as of Jul 11, 2026.
Which grading company is best for Tim Duncan [Refractor] #21?
By resale value, BGS 10 leads at $461, ahead of PSA 10 at $355. Fees and turnaround differ, so the best-paying label is not always the best net.
What centering does Tim Duncan [Refractor] #21 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.
Is your basketball card centered well enough to grade?
Centering makes or breaks a PSA 10. Scan any card with Midpoint to measure its exact centering, get a grade estimate, and see what your copy is actually worth.
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