SWSH07: Evolving Skies Sylveon V #183: PSA 9 vs PSA 10
The PSA 10 to PSA 9 spread on SWSH07: Evolving Skies Sylveon V #183 is a wide gem-mint premium: $90, with PSA 10 copies trading at 4.3x a PSA 9. Based on a 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.
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 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 non-holo with a $90 gap between PSA 9 and PSA 10. The PSA 9 to PSA 10 jump on WOTC-era cards reflects population scarcity at the top grade, not raw print run.
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