SV: Scarlet & Violet 151 Mewtwo #150: PSA 9 vs PSA 10

The PSA 10 to PSA 9 spread on SV: Scarlet & Violet 151 Mewtwo #150 is one of the widest gaps in vintage WOTC: $416, with PSA 10 copies trading at 24.1x a PSA 9. Based on the most recent PSA 10 sale of $434.14 on Apr 14, 2026, the crack-and-resub math favors the resub: expected value is positive even at a conservative 15% upgrade probability.

PSA 10

$434.14

Last sale $434.14 on Apr 14, 2026 UTC

PSA 9

$18.00

Last sale $18.00 on Mar 16, 2026 UTC

PSA 8

$19.99

Last sale $19.99 on Apr 9, 2026 UTC

The Spread

The PSA 9 to PSA 10 spread on Mewtwo #150 SV: Scarlet & Violet 151.

$416

Dollar gap, PSA 9 to PSA 10

24.1x

PSA 10 sells for 24.1x a PSA 9

Three-Outcome EV Calculator

PSA 9 acquisition cost ($)

PSA resub cost ($)

Probability of each outcome (must total 100%)

PSA 10 (upgrade) 15%

PSA 9 (regrade) 70%

PSA 8 (downgrade) 15%

Defaults are conservative starting points. Adjust based on the specific slab. A borderline 9 with strong centering plays differently than a 9 with edge wear.

PSA 10 outcome (sale price minus resub minus acquisition) $0

PSA 9 outcome (regrade, no upgrade) $0

PSA 8 outcome (downgrade, slower sell, tied capital) $0

Expected Value

Math favors holding the 9

SV: Scarlet & Violet 151 #150 Mewtwo released in 2023 sits in the vintage WOTC tier where gem-mint premiums above $416 are common. PSA 10 populations shrink faster than supply on cards of this era, which is why the upgrade arbitrage stays alive.

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