MidpointCard Centering Grading Portfolio App
Brook (Adventure on Kami's Island OP15-032) — is it worth grading?

Is Brook worth grading?

One Piece · Adventure on Kami's Island · OP15-032 · full price guide →

Worth grading — even a PSA 9 beats raw

A PSA 10 Brook sells for $87.30 against $3.08 raw: a $84.22 spread, 28× the ungraded price. Even a PSA 9 ($43.00) clears the raw price after an economy-tier ~$25 fee, so a near-miss still comes out ahead. Centering is the usual reason a clean copy misses the 10 — measure it before you submit.

Raw (NM)
$3.08
PSA 10
$87.30
PSA 9
$43.00
Gem premium
28×
As of
Sep 27, 2026

Break-even by outcome and fee

Brook: 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$87.30+$59.22+$34.22−$65.78
PSA 9$43.00+$14.92−$10.08−$110

Net = sale price − $3.08 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?

Brook: expected value of submitting by gem probability
Chance it gemsExpected saleExpected net (standard fee)
25%$54.08+$1.00
50%$65.15+$12.07
75%$76.22+$23.14

Break-even gem rate at the standard fee: about 23%. 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 →
Brook: top-grade value by grading company with centering tolerance
Grader10 sells forvs bestFront centering for a 10Back
PSA 10$87.30best55/4575/25
CGC 10$4.15−$83.1555/4575/25

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.

Brook graded prices by company and grade
GradePSACGCBGSTAG
10$87.30$4.15—$89.00
9.5——$27.00—
9$43.00———

Swipe the table for the other grading companies →

Run your own numbers

Should I pay this?

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

Other Adventure on Kami's Island cards worth checking

Full set checklist →

Grading Brook — FAQ

Is Brook worth grading?

A PSA 10 Brook sells for $87.30 against $3.08 raw: a $84.22 spread, 28× the ungraded price. Even a PSA 9 ($43.00) clears the raw price after an economy-tier ~$25 fee, so a near-miss still comes out ahead. Centering is the usual reason a clean copy misses the 10 — measure it before you submit.

How much is a PSA 10 Brook worth compared with raw?

A PSA 10 Brook (Adventure on Kami's Island OP15-032) sells for about $87.30 versus $3.08 for a raw near-mint copy — a 28× premium as of Sep 27, 2026.

Which grading company is best for Brook?

By resale value, PSA 10 leads at $87.30, ahead of CGC 10 at $4.15. Fees and turnaround differ, so the best-paying label is not always the best net.

What centering does Brook need for a PSA 10?

PSA publishes 55/45 front and 75/25 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 Brook break even?

At a standard ~$50 fee, submitting Brook breaks even when it gems about 23% of the time (a miss assumed to sell at the PSA 9 price of $43.00).

Best on iPhone & Android

Check your One Piece 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