![Kon Knueppel [Purple Refractor] #254 (Basketball Cards 2025 Topps Chrome) — is it worth grading?](https://i.ebayimg.com/images/g/TicAAeSwzbZqj00C/s-l1600.jpg)
Is Kon Knueppel [Purple Refractor] #254 worth grading?
Basketball · Basketball Cards 2025 Topps Chrome · full price guide →
Worth grading — even a PSA 9 beats raw
A PSA 10 Kon Knueppel [Purple Refractor] #254 sells for $1,301 against $334 raw: a $967 spread, 3.9× the ungraded price. Even a PSA 9 ($371) 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)
- $334
- PSA 10
- $1,301
- PSA 9
- $371
- Gem premium
- 3.9×
- 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 | $1,301 | +$942 | +$917 | +$817 |
| PSA 9 | $371 | +$12.00 | −$13.00 | −$113 |
| PSA 8 | $272 | −$87.25 | −$112 | −$212 |
Net = sale price − $334 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% | $603 | +$219 |
| 50% | $836 | +$452 |
| 75% | $1,068 | +$684 |
Break-even gem rate at the standard fee: about 1%. 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 | $1,691 | best | 55/45 | 70/30 |
| PSA 10 | $1,301 | −$390 | 55/45 | 75/25 |
| CGC 10 | $781 | −$910 | 55/45 | 75/25 |
| SGC 10 | $781 | −$910 | 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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Other 2025 Topps Chrome cards worth checking
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Grading Kon Knueppel [Purple Refractor] #254 — FAQ
Is Kon Knueppel [Purple Refractor] #254 worth grading?
A PSA 10 Kon Knueppel [Purple Refractor] #254 sells for $1,301 against $334 raw: a $967 spread, 3.9× the ungraded price. Even a PSA 9 ($371) 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 Kon Knueppel [Purple Refractor] #254 worth compared with raw?
A PSA 10 Kon Knueppel [Purple Refractor] #254 (Basketball Cards 2025 Topps Chrome) sells for about $1,301 versus $334 for a raw near-mint copy — a 3.9× premium as of Sep 3, 2026.
Which grading company is best for Kon Knueppel [Purple Refractor] #254?
By resale value, BGS 10 leads at $1,691, ahead of PSA 10 at $1,301. Fees and turnaround differ, so the best-paying label is not always the best net.
What centering does Kon Knueppel [Purple 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 [Purple Refractor] #254 break even?
At a standard ~$50 fee, submitting Kon Knueppel [Purple Refractor] #254 breaks even when it gems about 1% of the time (a miss assumed to sell at the PSA 9 price of $371).
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