SV: Prismatic Evolutions Sylveon ex 156/131: PSA 9 vs PSA 10
The PSA 10 to PSA 9 spread on SV: Prismatic Evolutions Sylveon ex 156/131 is a wide gem-mint premium: $1,253, with PSA 10 copies trading at 4x a PSA 9. Based on the most recent PSA 10 sale of $1,700.00 on May 27, 2026, the crack-and-resub math favors the resub: expected value is positive even at a conservative 15% upgrade probability.
PSA 10
$1,675.57
Last sale $1,700.00 on
PSA 9
$422.73
Last sale $444.48 on
PSA 8
$360.14
Last sale $345.00 on
The Spread
The PSA 9 to PSA 10 spread on Sylveon ex 156/131 (SV: Prismatic Evolutions).
$1,253
Dollar gap, PSA 9 to PSA 10
4x
PSA 10 sells for 4x 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
SV: Prismatic Evolutions 156/131 Sylveon ex is a modern-era release from 2025. The gap between its PSA 9 and PSA 10 prices is $1,253.
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