Base Set Magneton #9: PSA 9 vs PSA 10
The PSA 10 to PSA 9 spread on Base Set Magneton #9 is one of the widest gaps in vintage WOTC: $2,082, with PSA 10 copies trading at 11.7x a PSA 9. Based on the most recent PSA 10 sale of $2,002.00 on Apr 29, 2026, the crack-and-resub math favors the resub: expected value is positive even at a conservative 15% upgrade probability.
PSA 10
$2,276.50
Last sale $2,002.00 on
PSA 9
$194.99
Last sale $182.50 on
PSA 8
$71.69
Last sale $68.00 on
The Spread
The PSA 9 to PSA 10 spread on Magneton #9 Base Set.
$2,082
Dollar gap, PSA 9 to PSA 10
11.7x
PSA 10 sells for 11.7x 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 Base Set picture: a holo with a $2,082 gap between PSA 9 and PSA 10. The PSA 9 to PSA 10 jump on WOTC-era cards reflects population scarcity at the top grade, not raw print run.
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