Midpoint - Card Centering Tool

Is Mark McGwire #3 worth grading?

Baseball · Baseball Cards 1988 Topps Tiffany · full price guide →

Strong grading candidate — 23× premium in PSA 10

A PSA 10 Mark McGwire #3 sells for $116 against $4.99 raw: a $111 spread, 23× the ungraded price. A PSA 9 ($24.32) 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)
$4.99
PSA 10
$116
PSA 9
$24.32
Gem premium
23×
As of
Jul 11, 2026

Break-even by outcome and fee

Mark McGwire #3: net result of grading versus selling raw, by outcome and fee tier
If it comes back…Sells forEconomy / bulk (~$25.00)Standard (~$50.00)Express (~$150)
Gem — PSA 10$116+$86.08+$61.08−$38.92
PSA 9$24.32−$5.67−$30.67−$131
PSA 8$12.00−$17.99−$42.99−$143

Net = sale price − $4.99 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?

Mark McGwire #3: expected value of submitting by gem probability
Chance it gemsExpected saleExpected net (standard fee)
25%$47.26−$7.73
50%$70.19+$15.20
75%$93.13+$38.14

Break-even gem rate at the standard fee: about 33%. 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
Mark McGwire #3: top-grade value by grading company with centering tolerance
Grader10 sells forvs bestFront centering for a 10Back
BGS 10$151best55/4570/30
PSA 10$116−$34.9355/4575/25
CGC 10$70.00−$81.0055/4575/25
SGC 10$70.00−$81.0055/4575/25

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.

Mark McGwire #3 graded prices by company and grade
GradePSACGCBGSSGCGraded
10$116$70.00$151$70.00
9.5$37.99
9$24.32
8$12.00
7$8.47

Run your own numbers

Should I pay this?

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Grading Mark McGwire #3 — FAQ

Is Mark McGwire #3 worth grading?

A PSA 10 Mark McGwire #3 sells for $116 against $4.99 raw: a $111 spread, 23× the ungraded price. A PSA 9 ($24.32) 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 #3 worth compared with raw?

A PSA 10 Mark McGwire #3 (Baseball Cards 1988 Topps Tiffany) sells for about $116 versus $4.99 for a raw near-mint copy — a 23× premium as of Jul 11, 2026.

Which grading company is best for Mark McGwire #3?

By resale value, BGS 10 leads at $151, ahead of PSA 10 at $116. Fees and turnaround differ, so the best-paying label is not always the best net.

What centering does Mark McGwire #3 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 #3 break even?

At a standard ~$50 fee, submitting Mark McGwire #3 breaks even when it gems about 33% of the time (a miss assumed to sell at the PSA 9 price of $24.32).

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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