Base Set Magmar 36/102: PSA 9 vs PSA 10
The PSA 10 to PSA 9 spread on Base Set Magmar 36/102 is a meaningful PSA 10 premium: $65, with PSA 10 copies trading at 2.2x a PSA 9. Based on the last tracked PSA 10 sale of $120.00 on May 7, 2026, the math leans toward holding the 9: expected value turns negative at conservative upgrade probabilities once the resub fee is in.
PSA 10
$120.00
Last sale $120.00 on
PSA 9
$55.07
Last sale $31.20 on
PSA 8
$33.50
Last sale $17.00 on
The Spread
The PSA 9 to PSA 10 spread on Magmar 36/102 (Base Set).
$65
Dollar gap, PSA 9 to PSA 10
2.2x
PSA 10 sells for 2.2x 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
Base Set 36/102 Magmar is a WOTC-era release from 1999. The gap between its PSA 9 and PSA 10 prices is $65.
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