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Professor Elm's Training Method (Expedition Base Set 148/165) — is it worth grading?

Is Professor Elm's Training Method worth grading?

Pokémon · Expedition Base Set · 148/165 · full price guide →

Worth grading only if it gems

A PSA 10 Professor Elm's Training Method brings $40.56 versus $2.29 raw — a $38.27 spread that covers an economy-tier ~$25 grading fee. A PSA 9 ($22.00) only about breaks even after fees, so the case rests on gemming.

Raw (NM)
$2.29
PSA 10
$40.56
PSA 9
$22.00
Gem premium
18×
As of
Aug 10, 2026

Break-even by outcome and fee

Professor Elm's Training Method: 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$40.56+$13.27−$11.73−$112
PSA 9$22.00−$5.29−$30.29−$130
PSA 8$32.85+$5.56−$19.44−$119

Net = sale price − $2.29 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?

Professor Elm's Training Method: expected value of submitting by gem probability
Chance it gemsExpected saleExpected net (standard fee)
25%$26.64−$25.65
50%$31.28−$21.01
75%$35.92−$16.37

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

Which grader pays the most — and what a 10 takes

All centering standards →
Professor Elm's Training Method: top-grade value by grading company with centering tolerance
Grader10 sells forvs bestFront centering for a 10Back
CGC 10$60.00best55/4575/25
PSA 10$40.56−$19.4455/4575/25

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.

Professor Elm's Training Method graded prices by company and grade
GradePSACGC
10$165$60.00
9.5—$10.00
9$15.00$24.45
8.5—$11.00
8$32.85$8.56
7$7.00—
6$50.00$7.96

Run your own numbers

Should I pay this?

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

Other Expedition Base Set cards worth checking

Full set checklist →

Grading Professor Elm's Training Method — FAQ

Is Professor Elm's Training Method worth grading?

A PSA 10 Professor Elm's Training Method brings $40.56 versus $2.29 raw — a $38.27 spread that covers an economy-tier ~$25 grading fee. A PSA 9 ($22.00) only about breaks even after fees, so the case rests on gemming.

How much is a PSA 10 Professor Elm's Training Method worth compared with raw?

A PSA 10 Professor Elm's Training Method (Expedition Base Set 148/165) sells for about $40.56 versus $2.29 for a raw near-mint copy — a 18× premium as of Aug 10, 2026.

Which grading company is best for Professor Elm's Training Method?

By resale value, CGC 10 leads at $60.00, ahead of PSA 10 at $40.56. Fees and turnaround differ, so the best-paying label is not always the best net.

What centering does Professor Elm's Training Method need for a CGC 10?

CGC 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.

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