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SWSH07: Evolving Skies Sylveon V 183/203: PSA 9 vs PSA 10

The PSA 10 to PSA 9 spread on SWSH07: Evolving Skies Sylveon V 183/203 is a wide gem-mint premium: $90, with PSA 10 copies trading at 4.3x a PSA 9. Based on the most recent PSA 10 sale of $137.64 on May 26, 2026, the math leans toward holding the 9: expected value turns negative at conservative upgrade probabilities once the resub fee is in.

SWSH07: Evolving Skies Sylveon V 183/203
PSA 10
$117.21
Last sale $137.64 on
PSA 9
$27.50
Last sale $30.00 on
PSA 8
$20.75
Last sale $11.50 on

The Spread

The PSA 9 to PSA 10 spread on Sylveon V 183/203 (SWSH07: Evolving Skies).

$90
Dollar gap, PSA 9 to PSA 10
4.3x
PSA 10 sells for 4.3x a PSA 9

Three-Outcome EV Calculator

15%
70%
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
$0
Math favors holding the 9

Where this card lands in the broader SWSH07: Evolving Skies picture: a modern-era card carrying a $90 gap between PSA 9 and PSA 10, a 4.3x multiple on the PSA 9 price.

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