SWSH09: Brilliant Stars Granbull V 57/172: PSA 9 vs PSA 10
The PSA 10 to PSA 9 spread on SWSH09: Brilliant Stars Granbull V 57/172 is a wide gem-mint premium: $41, with PSA 10 copies trading at 3.4x a PSA 9. Based on the last tracked PSA 10 sale of $59.00 on May 1, 2026, the math leans toward holding the 9: expected value turns negative at conservative upgrade probabilities once the resub fee is in.
PSA 10
$59.00
Last sale $59.00 on
PSA 9
$17.61
Last sale $22.50 on
PSA 8
$8.00
Last sale $8.00 on
The Spread
The PSA 9 to PSA 10 spread on Granbull V 57/172 (SWSH09: Brilliant Stars).
$41
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
Where this card lands in the broader SWSH09: Brilliant Stars picture: a modern-era holo carrying a $41 gap between PSA 9 and PSA 10, a 3.4x multiple on the PSA 9 price.
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