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Blastoise (Expedition Base Set 4/165) — is it worth grading?

Is Blastoise worth grading?

Pokémon · Expedition Base Set · 4/165 · full price guide →

Worth grading — even a PSA 9 beats raw

A PSA 10 Blastoise sells for $20,357 against $94.22 raw: a $20,263 spread, 216× the ungraded price. Even a PSA 9 ($2,944) 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)
$94.22
PSA 10
$20,357
PSA 9
$2,944
Gem premium
216×
As of
Oct 3, 2026

Break-even by outcome and fee

Blastoise: 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$20,357+$20,238+$20,213+$20,113
PSA 9$2,944+$2,825+$2,800+$2,700
PSA 8$1,332+$1,213+$1,188+$1,088

Net = sale price − $94.22 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?

Blastoise: expected value of submitting by gem probability
Chance it gemsExpected saleExpected net (standard fee)
25%$7,298+$7,153
50%$11,651+$11,507
75%$16,004+$15,860

Even a miss (a 9) beats selling raw after the standard fee — the gem rate only decides how much you win by.

Which grader pays the most — and what a 10 takes

All centering standards →
Blastoise: top-grade value by grading company with centering tolerance
Grader10 sells forvs bestFront centering for a 10Back
PSA 10$20,357best55/4575/25
CGC 10$953−$19,40455/4575/25

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.

Blastoise graded prices by company and grade
GradePSACGCBGSSGCTAGACE
10$4,381$953————
9.5—$1,260$2,436———
9$806$238$220——$1,879
8.5$850$69.00$840———
8$365$120$545$83.00—$580
7.5—$55.00$225———
7$440$313$99.00———
6.5—$55.20————
6$173$41.00————
5.5—$301————
5$138———$450—
4.5—$130————
4$125$85.00————
3$118—————
2$36.00$113————
1$193—————

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 Expedition Base Set cards worth checking

Full set checklist →

Grading Blastoise — FAQ

Is Blastoise worth grading?

A PSA 10 Blastoise sells for $20,357 against $94.22 raw: a $20,263 spread, 216× the ungraded price. Even a PSA 9 ($2,944) 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 Blastoise worth compared with raw?

A PSA 10 Blastoise (Expedition Base Set 4/165) sells for about $20,357 versus $94.22 for a raw near-mint copy — a 216× premium as of Oct 3, 2026.

Which grading company is best for Blastoise?

By resale value, PSA 10 leads at $20,357, ahead of CGC 10 at $953. Fees and turnaround differ, so the best-paying label is not always the best net.

What centering does Blastoise 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.

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