Graded economics-13%
PSA 10$82.75PriceCharting crawler
PSA 9$29.45PriceCharting crawler
PSA 8$21.38PriceCharting crawler
Net EV$-6.04$41.39 net sale vs $47.43 cost
Outcome mix10 39% / 9 41% / 8 20%
Assumption$25.00 grade, 15% sale haircut
PSA 10/9 premium2.8x
PopulationPSA 10
Gem rate39.1%
PSA 10 pop107
Total pop274
SourceGemRate snapshot enrichment
PSA 10 velocity-
Total velocity-
SnapshotJun 20, 2026
Scarcity41/100
LabelWeak
Confidence100/100
Supply37/100
Demand17/100
Gem rate 39.1%PSA 10 pop 107/274PSA 10/9 premium 2.8xSupply constraint 37/100
Raw validationconfirmed
TCG market$20.87
Pulse price$22.43
Delta-7%
CheckedJun 22, 2026
Grass Energy (Secret)PSA comps refreshed Jun 22, 2026PSA sales window 365 days
Signal context1
Support$19.58 floor, 3 tests
*All-time high/low are within the tracked window (2024-03-08 - 2026-09-15). Raw, ungraded TCGplayer market price (blue) and cheapest listing (grey) via the free TCGCSV mirror. Personal, non-commercial prototype - not investment advice.