Base Set Chansey 3/102: PSA 9 vs PSA 10
The PSA 10 to PSA 9 spread on Base Set Chansey 3/102 is an unusually wide gem-mint premium: $6,987, with PSA 10 copies trading at 19.7x a PSA 9. Based on the last tracked PSA 10 sale of $6,082.19 on Apr 12, 2026, the crack-and-resub math favors the resub: expected value is positive even at a conservative 15% upgrade probability.
PSA 10
$7,360.72
Last sale $6,082.19 on
PSA 9
$374.12
Last sale $402.00 on
PSA 8
$92.73
Last sale $73.00 on
The Spread
The PSA 9 to PSA 10 spread on Chansey 3/102 (Base Set).
$6,987
Dollar gap, PSA 9 to PSA 10
19.7x
PSA 10 sells for 19.7x 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 WOTC-era holo carrying a $6,987 gap between PSA 9 and PSA 10, a 19.7x multiple on the PSA 9 price.
More Chansey Comparisons
Other Base Set Heavy Hitters
Track every grade tier. Spot every gap.
Real PSA prices across every grade tier. Free during beta.
Get Free Beta AccessFounding Member Cohort · Limited to the First 100 Members.