Is Frank Thomas #DK-8 worth grading?
Baseball · Baseball Cards 1992 Donruss Diamond Kings · full price guide →
Strong grading candidate — 99× premium in PSA 10
A PSA 10 Frank Thomas #DK-8 sells for $194 against $1.97 raw: a $192 spread, 99× the ungraded price. A PSA 9 ($23.16) 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)
- $1.97
- PSA 10
- $194
- PSA 9
- $23.16
- Gem premium
- 99×
- 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 | $194 | +$167 | +$142 | +$42.39 |
| PSA 9 | $23.16 | −$3.81 | −$28.81 | −$129 |
| PSA 8 | $12.50 | −$14.47 | −$39.47 | −$139 |
Net = sale price − $1.97 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% | $65.96 | +$13.99 |
| 50% | $109 | +$56.79 |
| 75% | $152 | +$99.59 |
Break-even gem rate at the standard fee: about 17%. 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 | $253 | best | 55/45 | 70/30 |
| PSA 10 | $194 | −$58.64 | 55/45 | 75/25 |
| CGC 10 | $117 | −$136 | 55/45 | 75/25 |
| SGC 10 | $117 | −$136 | 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 | $194 | $117 | $253 | $117 | — |
| 9.5 | — | — | — | — | $43.07 |
| 9 | — | — | — | — | $23.16 |
| 8 | — | — | — | — | $12.50 |
| 7 | — | — | — | — | $10.50 |
Run your own numbers
Should I pay this?
Enter the seller’s asking price to see your net outcome per grade.
Other 1992 Donruss Diamond Kings cards worth checking
Full set checklist →
Grading Frank Thomas #DK-8 — FAQ
Is Frank Thomas #DK-8 worth grading?
A PSA 10 Frank Thomas #DK-8 sells for $194 against $1.97 raw: a $192 spread, 99× the ungraded price. A PSA 9 ($23.16) 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 Frank Thomas #DK-8 worth compared with raw?
A PSA 10 Frank Thomas #DK-8 (Baseball Cards 1992 Donruss Diamond Kings) sells for about $194 versus $1.97 for a raw near-mint copy — a 99× premium as of Jul 11, 2026.
Which grading company is best for Frank Thomas #DK-8?
By resale value, BGS 10 leads at $253, ahead of PSA 10 at $194. Fees and turnaround differ, so the best-paying label is not always the best net.
What centering does Frank Thomas #DK-8 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 Frank Thomas #DK-8 break even?
At a standard ~$50 fee, submitting Frank Thomas #DK-8 breaks even when it gems about 17% of the time (a miss assumed to sell at the PSA 9 price of $23.16).
Is your baseball 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.
Check my card free