MidpointCard Centering Grading Portfolio App
Brooks Robinson #S-BR (Baseball Cards 2018 Panini Diamond Kings Signatures) — is it worth grading?

Is Brooks Robinson #S-BR worth grading?

Baseball · Baseball Cards 2018 Panini Diamond Kings Signatures · full price guide →

Grading rarely pays for this card

Grade 9.5 copies of Brooks Robinson #S-BR sell for $36.00, only $11.78 above the $24.22 raw price — less than an economy-tier grading fee. A PSA 9 ($33.11) only about breaks even after fees, so the case rests on gemming. Keep it raw unless you are grading for the slab itself.

Raw (NM)
$24.22
Grade 9.5
$36.00
PSA 9
$33.11
Gem premium
1.5×
As of
Sep 4, 2026

Break-even by outcome and fee

Brooks Robinson #S-BR: 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 — Grade 9.5$36.00−$13.22−$38.22−$138
PSA 9$33.11−$16.11−$41.11−$141

Net = sale price − $24.22 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?

Brooks Robinson #S-BR: expected value of submitting by gem probability
Chance it gemsExpected saleExpected net (standard fee)
25%$33.83−$40.39
50%$34.55−$39.66
75%$35.28−$38.94

At the standard fee this submission does not break even at any realistic gem rate unless the miss lands above the 9 price.

Brooks Robinson #S-BR graded prices by company and grade
GradeGraded
9.5$36.00
9$33.11

Run your own numbers

Should I pay this?

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

Other 2018 Panini Diamond Kings Signatures cards worth checking

Full set checklist

Grading Brooks Robinson #S-BR — FAQ

Is Brooks Robinson #S-BR worth grading?

Grade 9.5 copies of Brooks Robinson #S-BR sell for $36.00, only $11.78 above the $24.22 raw price — less than an economy-tier grading fee. A PSA 9 ($33.11) only about breaks even after fees, so the case rests on gemming. Keep it raw unless you are grading for the slab itself.

Best on iPhone & Android

Check your baseball card in the Midpoint app

Scan with your camera to measure centering to the millimeter, get an AI grade with corner and edge close-ups, see what your copy is worth, and track it in your portfolio. Free to start.

Download on the App StoreGet it on Google Play

Or try it on the web →

Best on iPhone & Android

The full Midpoint experience is in the app

Scan with your camera, get AI grades with corner and edge close-ups, issue Grade Certificates, set price alerts, track your portfolio and talk to other collectors — everything here, plus the parts a browser can't do. Free to start.

Download on the App StoreGet it on Google Play