SV: Scarlet & Violet 151 Tangela #178: PSA 9 vs PSA 10

SV: Scarlet & Violet 151 Tangela #178 shows one of the widest gaps in vintage WOTC between PSA 9 and PSA 10: a $128 dollar gap, with the gem mint multiplier at 5.6x. Based on a recent PSA 10 sale of $171.50 on May 17, 2026, the math leans toward holding the 9: expected value turns negative at conservative upgrade probabilities once the resub fee is in.

PSA 10

$155.19

Last sale $171.50 on May 17, 2026 UTC

PSA 9

$27.52

Last sale $30.00 on May 29, 2026 UTC

PSA 8

$19.27

Last sale $20.50 on May 25, 2026 UTC

The Spread

The PSA 9 to PSA 10 spread on Tangela #178 SV: Scarlet & Violet 151.

$128

Dollar gap, PSA 9 to PSA 10

5.6x

PSA 10 sells for 5.6x 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

SV: Scarlet & Violet 151 #178 Tangela released in 2023 sits in the vintage WOTC tier where gem-mint premiums above $128 are common. PSA 10 populations shrink faster than supply on cards of this era, which is why the upgrade arbitrage stays alive.

More Tangela Comparisons

Other SV: Scarlet & Violet 151 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.