![Kon Knueppel [RayWave Refractor] #254 (Basketball Cards 2025 Topps Chrome) — is it worth grading?](https://i.ebayimg.com/images/g/3TwAAeSwzN1qvbRG/s-l1600.jpg)
Is Kon Knueppel [RayWave Refractor] #254 worth grading?
Basketball · Basketball Cards 2025 Topps Chrome · full price guide →
Strong grading candidate — 13× premium in PSA 10
A PSA 10 Kon Knueppel [RayWave Refractor] #254 sells for $273 against $21.63 raw: a $251 spread, 13× the ungraded price. A PSA 9 ($45.15) 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)
- $21.63
- PSA 10
- $273
- PSA 9
- $45.15
- Gem premium
- 13×
- 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 | $273 | +$226 | +$201 | +$101 |
| PSA 9 | $45.15 | −$1.48 | −$26.48 | −$126 |
| PSA 8 | $30.00 | −$16.63 | −$41.63 | −$142 |
Net = sale price − $21.63 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% | $102 | +$30.36 |
| 50% | $159 | +$87.19 |
| 75% | $216 | +$144 |
Break-even gem rate at the standard fee: about 12%. 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 | $354 | best | 55/45 | 70/30 |
| PSA 10 | $273 | −$81.50 | 55/45 | 75/25 |
| CGC 10 | $164 | −$190 | 55/45 | 75/25 |
| SGC 10 | $89.75 | −$264 | 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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Enter the seller’s asking price to see your net outcome per grade.
Other 2025 Topps Chrome cards worth checking
Full set checklist →![Cooper Flagg [RayWave Red Refractor] #251 2025 Topps Chrome card](https://i.ebayimg.com/images/g/GAIAAeSw5NJqkYcz/s-l500.jpg)
Grading Kon Knueppel [RayWave Refractor] #254 — FAQ
Is Kon Knueppel [RayWave Refractor] #254 worth grading?
A PSA 10 Kon Knueppel [RayWave Refractor] #254 sells for $273 against $21.63 raw: a $251 spread, 13× the ungraded price. A PSA 9 ($45.15) 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 Kon Knueppel [RayWave Refractor] #254 worth compared with raw?
A PSA 10 Kon Knueppel [RayWave Refractor] #254 (Basketball Cards 2025 Topps Chrome) sells for about $273 versus $21.63 for a raw near-mint copy — a 13× premium as of Sep 3, 2026.
Which grading company is best for Kon Knueppel [RayWave Refractor] #254?
By resale value, BGS 10 leads at $354, ahead of PSA 10 at $273. Fees and turnaround differ, so the best-paying label is not always the best net.
What centering does Kon Knueppel [RayWave Refractor] #254 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 Kon Knueppel [RayWave Refractor] #254 break even?
At a standard ~$50 fee, submitting Kon Knueppel [RayWave Refractor] #254 breaks even when it gems about 12% of the time (a miss assumed to sell at the PSA 9 price of $45.15).
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