Neo Genesis Donphan 21/111: PSA 9 vs PSA 10
The PSA 10 to PSA 9 spread on Neo Genesis Donphan 21/111 is a modest premium: -$28, with PSA 10 copies trading at 0.5x a PSA 9. Based on the last tracked PSA 10 sale of $25.65 on Nov 18, 2025, the math leans toward holding the 9: expected value turns negative at conservative upgrade probabilities once the resub fee is in.
PSA 10
$25.65
Last sale $25.65 on
PSA 9
$53.92
Last sale $53.92 on
PSA 8
$19.99
Last sale $19.99 on
The Spread
The PSA 9 to PSA 10 spread on Donphan 21/111 (Neo Genesis).
-$28
Dollar gap, PSA 9 to PSA 10
0.5x
PSA 10 sells for 0.5x 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 Neo Genesis picture: a WOTC-era card carrying a -$28 gap between PSA 9 and PSA 10, a 0.5x multiple on the PSA 9 price.
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