Midpoint - Card Centering Tool
Checklist 397-528 [Steve Carlton] #528 (Baseball Cards 1988 Topps) — is it worth grading?

Is Checklist 397-528 [Steve Carlton] #528 worth grading?

Baseball · Baseball Cards 1988 Topps · full price guide →

Strong grading candidate — 40× premium in PSA 10

A PSA 10 Checklist 397-528 [Steve Carlton] #528 sells for $81.00 against $2.05 raw: a $78.95 spread, 40× the ungraded price. A PSA 9 ($22.00) 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)
$2.05
PSA 10
$81.00
PSA 9
$22.00
Gem premium
40×
As of
Jul 11, 2026

Break-even by outcome and fee

Checklist 397-528 [Steve Carlton] #528: 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$81.00+$53.95+$28.95−$71.05
PSA 9$22.00−$5.05−$30.05−$130

Net = sale price − $2.05 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?

Checklist 397-528 [Steve Carlton] #528: expected value of submitting by gem probability
Chance it gemsExpected saleExpected net (standard fee)
25%$36.75−$15.30
50%$51.50−$0.55
75%$66.25+$14.20

Break-even gem rate at the standard fee: about 51%. 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
Checklist 397-528 [Steve Carlton] #528: top-grade value by grading company with centering tolerance
Grader10 sells forvs bestFront centering for a 10Back
BGS 10$105best55/4570/30
PSA 10$81.00−$24.0055/4575/25
CGC 10$49.00−$56.0055/4575/25
SGC 10$49.00−$56.0055/4575/25

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.

Checklist 397-528 [Steve Carlton] #528 graded prices by company and grade
GradePSACGCBGSSGCGraded
10$81.00$49.00$105$49.00
9.5$24.00
9$22.00

Run your own numbers

Should I pay this?

Enter the seller’s asking price to see your net outcome per grade.

Other 1988 Topps cards worth checking

Full set checklist

Grading Checklist 397-528 [Steve Carlton] #528 — FAQ

Is Checklist 397-528 [Steve Carlton] #528 worth grading?

A PSA 10 Checklist 397-528 [Steve Carlton] #528 sells for $81.00 against $2.05 raw: a $78.95 spread, 40× the ungraded price. A PSA 9 ($22.00) 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 Checklist 397-528 [Steve Carlton] #528 worth compared with raw?

A PSA 10 Checklist 397-528 [Steve Carlton] #528 (Baseball Cards 1988 Topps) sells for about $81.00 versus $2.05 for a raw near-mint copy — a 40× premium as of Jul 11, 2026.

Which grading company is best for Checklist 397-528 [Steve Carlton] #528?

By resale value, BGS 10 leads at $105, ahead of PSA 10 at $81.00. Fees and turnaround differ, so the best-paying label is not always the best net.

What centering does Checklist 397-528 [Steve Carlton] #528 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 Checklist 397-528 [Steve Carlton] #528 break even?

At a standard ~$50 fee, submitting Checklist 397-528 [Steve Carlton] #528 breaks even when it gems about 51% of the time (a miss assumed to sell at the PSA 9 price of $22.00).

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