Professor's Research [Professor Sada] - 189/198

Professor's Research [Professor Sada] - 189/198 Rev Holo

Professor Program Promos - #189/198 - SV - Promo
Current
$13.58
PT ok$14.08 +4%Scarcity 59Grade EV +375%
All-time high*
$50.49
All-time low*
$12.27
vs high
-73%
On sale - 73% off - BasingView on TCGplayereBay Buy It NoweBay Auctions
Graded economics+375%
PSA 10$422.63PokemonPriceTracker 365d
PSA 9$8.44PokemonPriceTracker 365d
PSA 8-PokemonPriceTracker 365d
Net EV$144.62$183.20 net sale vs $38.58 cost
Outcome mix10 50% / 9 50%
Assumption$25.00 grade, 15% sale haircut
PSA 10/9 premium50.1x
PopulationPSA 10
Gem rate50.0%
PSA 10 pop10
Total pop20
SourceGemRate card search enrichment
PSA 10 velocity-
Total velocity-
SnapshotJun 22, 2026
Scarcity59/100
LabelWatch
Confidence92/100
Supply25/100
Demand71/100
Gem rate 50.0%PSA 10 pop 10/20PSA 10/9 premium 50.1xSupply constraint 25/100
Raw validationconfirmed
TCG market$14.08
Pulse price$13.58
Delta+4%
CheckedJun 22, 2026
Professor's Research - 189/198 (2023)PSA comps refreshed Jun 22, 2026PSA sales window 365 days
Signal context1
Drawdown73% off peak, Basing

*All-time high/low are within the tracked window (2024-08-08 - 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.