SLABS.
Blastoise #4 Expedition Base Set PSA 10

Blastoise #4 — PSA 10

Expedition Base Set · 2002

PSA 10 value
$14,072
PSA's estimate
PSA 9
$4,416
PriceCharting, 2026-10-09
Ungraded
$570
PriceCharting, 2026-10-09
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Value by grade

GradePSA populationValue× ungradedSource
PSA 10—$14,07224.7×PSA's estimate
PSA 9—$4,4167.7×PriceCharting, 2026-10-09
Ungraded—$5701.0×PriceCharting, 2026-10-09

PSA 10 value over time

$414$8,119$15,825 2021-10-012026-09-01

PriceCharting's PSA 10 price for this card, 2021-10-01 to 2026-09-01.

Recent PSA 10 sales

DatePrice
2026-07-18$15,500
2026-07-09$12,403
2026-05-18$14,762
2026-05-04$18,910
2026-04-20$15,250
2026-03-02$14,898
2026-02-15$7,073
2026-02-08$8,100
2026-01-26$6,500
2025-04-17$3,350

Recorded sales of this slab grade, as last read from PriceCharting.

Is it worth grading?

Grading pays off only if the chance of a 10 is high enough to cover the fee and the risk of a 9. Set your own numbers; the prices are filled in from this page.

Example inputs, not a prediction for this card. Everything below a 9 is valued at the ungraded price. Current PSA fees: psacard.com.

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