Is Mark McGwire #70 worth grading?
Baseball · Baseball Cards 1999 Topps · full price guide →
Strong grading candidate — 29× premium in PSA 10
A PSA 10 Mark McGwire #70 sells for $57.88 against $1.99 raw: a $55.89 spread, 29× the ungraded price. A PSA 9 ($14.99) 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)
- $1.99
- PSA 10
- $57.88
- PSA 9
- $14.99
- Gem premium
- 29×
- 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 | $57.88 | +$30.89 | +$5.89 | −$94.11 |
| PSA 9 | $14.99 | −$12.00 | −$37.00 | −$137 |
| PSA 8 | $8.50 | −$18.49 | −$43.49 | −$143 |
Net = sale price − $1.99 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% | $25.71 | −$26.28 |
| 50% | $36.44 | −$15.55 |
| 75% | $47.16 | −$4.83 |
Break-even gem rate at the standard fee: about 86%. 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 | $75.00 | best | 55/45 | 70/30 |
| PSA 10 | $57.88 | −$17.12 | 55/45 | 75/25 |
| CGC 10 | $35.00 | −$40.00 | 55/45 | 75/25 |
| SGC 10 | $35.00 | −$40.00 | 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.
Full grade ladder
Raw conditions & history →| Grade | PSA | CGC | BGS | SGC | Graded |
|---|---|---|---|---|---|
| 10 | $57.88 | $35.00 | $75.00 | $35.00 | — |
| 9.5 | — | — | — | — | $18.87 |
| 9 | — | — | — | — | $14.99 |
| 8 | — | — | — | — | $8.50 |
Run your own numbers
Should I pay this?
Enter the seller’s asking price to see your net outcome per grade.
Other 1999 Topps cards worth checking
Full set checklist →![Mark McGwire [HR 42] #220 1999 Topps card](https://i.ebayimg.com/images/g/enMAAOSwv9pndyBt/s-l500.jpg)
![Sammy Sosa [HR 32] #461 1999 Topps card](https://i.ebayimg.com/images/g/-nkAAeSwQw5qUroT/s-l500.jpg)
Grading Mark McGwire #70 — FAQ
Is Mark McGwire #70 worth grading?
A PSA 10 Mark McGwire #70 sells for $57.88 against $1.99 raw: a $55.89 spread, 29× the ungraded price. A PSA 9 ($14.99) 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 Mark McGwire #70 worth compared with raw?
A PSA 10 Mark McGwire #70 (Baseball Cards 1999 Topps) sells for about $57.88 versus $1.99 for a raw near-mint copy — a 29× premium as of Jul 11, 2026.
Which grading company is best for Mark McGwire #70?
By resale value, BGS 10 leads at $75.00, ahead of PSA 10 at $57.88. Fees and turnaround differ, so the best-paying label is not always the best net.
What centering does Mark McGwire #70 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 Mark McGwire #70 break even?
At a standard ~$50 fee, submitting Mark McGwire #70 breaks even when it gems about 86% of the time (a miss assumed to sell at the PSA 9 price of $14.99).
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.
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