SLABLYTICS Track Free During Beta

SWSH07: Evolving Skies Aroma Lady 221/203: PSA 9 vs PSA 10

On SWSH07: Evolving Skies Aroma Lady 221/203, PSA 10 sells for 1.7x a PSA 9, an $18 delta, which is a modest premium. Based on the most recent PSA 10 sale of $51.99 on May 17, 2026, the math leans toward holding the 9: expected value turns negative at conservative upgrade probabilities once the resub fee is in.

SWSH07: Evolving Skies Aroma Lady 221/203
PSA 10
$42.50
Last sale $51.99 on
PSA 9
$24.44
Last sale $24.44 on
PSA 8
$24.89
Last sale $24.89 on

The Spread

The PSA 9 to PSA 10 spread on Aroma Lady 221/203 (SWSH07: Evolving Skies).

$18
Dollar gap, PSA 9 to PSA 10
1.7x
PSA 10 sells for 1.7x 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 modern-era card carrying an $18 gap between PSA 9 and PSA 10, a 1.7x multiple on the PSA 9 price.

Track every grade tier. Spot every gap.

Real PSA prices across every grade tier. Free during beta.

Get Free Beta Access
Founding Member Cohort · Limited to the First 100 Members.