Base Set 2 Gyarados 7/130: PSA 9 vs PSA 10
Base Set 2 Gyarados 7/130 shows an unusually wide gem-mint premium between PSA 9 and PSA 10: a $1,113 dollar gap, with the gem mint multiplier at 7.1x. Based on the last tracked PSA 10 sale of $1,294.75 on Mar 8, 2026, the crack-and-resub math favors the resub: expected value is positive even at a conservative 15% upgrade probability.
PSA 10
$1,294.75
Last sale $1,294.75 on
PSA 9
$181.70
Last sale $175.00 on
PSA 8
$83.67
Last sale $71.00 on
The Spread
The PSA 9 to PSA 10 spread on Gyarados 7/130 (Base Set 2).
$1,113
Dollar gap, PSA 9 to PSA 10
7.1x
PSA 10 sells for 7.1x 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 2 picture: a WOTC-era holo carrying a $1,113 gap between PSA 9 and PSA 10, a 7.1x multiple on the PSA 9 price.
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Other Base Set 2 Heavy Hitters
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