Is Mark McGwire [Refractor] #PB1 worth grading?
Baseball · Baseball Cards 1999 Topps Power Brokers · full price guide →
Strong grading candidate — 24× premium in PSA 10
A PSA 10 Mark McGwire [Refractor] #PB1 sells for $270 against $11.05 raw: a $259 spread, 24× the ungraded price. A PSA 9 ($28.50) 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)
- $11.05
- PSA 10
- $270
- PSA 9
- $28.50
- Gem premium
- 24×
- As of
- Sep 4, 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 | $270 | +$234 | +$209 | +$109 |
| PSA 9 | $28.50 | −$7.55 | −$32.55 | −$133 |
| PSA 8 | $6.37 | −$29.68 | −$54.68 | −$155 |
Net = sale price − $11.05 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% | $88.77 | +$27.72 |
| 50% | $149 | +$87.99 |
| 75% | $209 | +$148 |
Break-even gem rate at the standard fee: about 14%. 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 | $350 | best | 55/45 | 70/30 |
| PSA 10 | $270 | −$80.41 | 55/45 | 75/25 |
| CGC 10 | $162 | −$188 | 55/45 | 75/25 |
| SGC 10 | $162 | −$188 | 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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Should I pay this?
Enter the seller’s asking price to see your net outcome per grade.
Other 1999 Topps Power Brokers cards worth checking
Full set checklist →![Barry Bonds [Refractor] #PB12 1999 Topps Power Brokers card](https://i.ebayimg.com/images/g/XE8AAeSwuIVqpBVn/s-l500.jpg)
Grading Mark McGwire [Refractor] #PB1 — FAQ
Is Mark McGwire [Refractor] #PB1 worth grading?
A PSA 10 Mark McGwire [Refractor] #PB1 sells for $270 against $11.05 raw: a $259 spread, 24× the ungraded price. A PSA 9 ($28.50) 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 [Refractor] #PB1 worth compared with raw?
A PSA 10 Mark McGwire [Refractor] #PB1 (Baseball Cards 1999 Topps Power Brokers) sells for about $270 versus $11.05 for a raw near-mint copy — a 24× premium as of Sep 4, 2026.
Which grading company is best for Mark McGwire [Refractor] #PB1?
By resale value, BGS 10 leads at $350, ahead of PSA 10 at $270. Fees and turnaround differ, so the best-paying label is not always the best net.
What centering does Mark McGwire [Refractor] #PB1 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 [Refractor] #PB1 break even?
At a standard ~$50 fee, submitting Mark McGwire [Refractor] #PB1 breaks even when it gems about 14% of the time (a miss assumed to sell at the PSA 9 price of $28.50).
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