SV08: Surging Sparks Black Kyurem ex 218/191: PSA 9 vs PSA 10
On SV08: Surging Sparks Black Kyurem ex 218/191, PSA 10 sells for 3.4x a PSA 9, a $39 delta, which is a wide gem-mint premium. Based on the most recent PSA 10 sale of $59.60 on May 28, 2026, the math leans toward holding the 9: expected value turns negative at conservative upgrade probabilities once the resub fee is in.
PSA 10
$55.51
Last sale $59.60 on
PSA 9
$16.38
Last sale $16.50 on
PSA 8
$12.28
Last sale $9.56 on
The Spread
The PSA 9 to PSA 10 spread on Black Kyurem ex 218/191 (SV08: Surging Sparks).
$39
Dollar gap, PSA 9 to PSA 10
3.4x
PSA 10 sells for 3.4x 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
SV08: Surging Sparks 218/191 Black Kyurem ex is a modern-era release from 2024. The gap between its PSA 9 and PSA 10 prices is $39.
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