SWSH12: Silver Tempest Mawile VSTAR 71/195: PSA 9 vs PSA 10
On SWSH12: Silver Tempest Mawile VSTAR 71/195, PSA 10 sells for 5x a PSA 9, a $41 delta, which is a wide gem-mint premium. Based on the most recent PSA 10 sale of $38.49 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
$51.74
Last sale $38.49 on
PSA 9
$10.41
Last sale $14.00 on
PSA 8
$7.28
Last sale $8.50 on
The Spread
The PSA 9 to PSA 10 spread on Mawile VSTAR 71/195 (SWSH12: Silver Tempest).
$41
Dollar gap, PSA 9 to PSA 10
5x
PSA 10 sells for 5x 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 SWSH12: Silver Tempest picture: a modern-era holo carrying a $41 gap between PSA 9 and PSA 10, a 5x multiple on the PSA 9 price.
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