Base Set Nidorino #37: PSA 9 vs PSA 10

Base Set Nidorino #37 shows one of the widest gaps in vintage WOTC between PSA 9 and PSA 10: a $362 dollar gap, with the gem mint multiplier at 10.5x. Based on the most recent PSA 10 sale of $350.00 on May 17, 2026, the crack-and-resub math favors the resub: expected value is positive even at a conservative 15% upgrade probability.

PSA 10

$400.00

Last sale $350.00 on May 17, 2026 UTC

PSA 9

$38.09

Last sale $41.00 on Apr 26, 2026 UTC

PSA 8

$20.50

Last sale $20.50 on May 8, 2026 UTC

The Spread

The PSA 9 to PSA 10 spread on Nidorino #37 Base Set.

$362

Dollar gap, PSA 9 to PSA 10

10.5x

PSA 10 sells for 10.5x a PSA 9

Three-Outcome EV Calculator

PSA 9 acquisition cost ($)

PSA resub cost ($)

Probability of each outcome (must total 100%)

PSA 10 (upgrade) 15%

PSA 9 (regrade) 70%

PSA 8 (downgrade) 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

Math favors holding the 9

Where this card lands in the broader Base Set picture: a non-holo with a $362 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.

Other Base Set Heavy Hitters

Track every grade tier. Spot every gap.

Real PSA prices across every grade tier. Founding member rate $3.99/mo locked forever. First 100 only.

Claim founding member rate

First 100 only. Founding member rate $3.99/mo locked forever.