Professor's Research - 189/198 (2023)

Professor Program Promos, Pokémon, 189/198


Professor's Research - 189/198 (2023)
Photo from the TCGplayer listing

Printing: Reverse Holofoil, Near Mint

$13.54

TCGplayer market price (an average of recent sales)

As of Oct 26 (yesterday). Unchanged since Oct 14.

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Price trend

Oct 19 $13.54 → Oct 26, 2026 $13.54 0.0%

$13.54
Oct 19, 2026Oct 21, 2026Oct 22, 2026Oct 23, 2026Oct 26, 2026

Sep 26 $13.74 → Oct 26, 2026 $13.54 −1.5%

$13.74$13.40$13.60$13.54
Sep 26, 2026Oct 6, 2026Oct 11, 2026Oct 16, 2026Oct 26, 2026

Jul 28 $13.25 → Oct 26, 2026 $13.54 +2.2%

$13.89$12.27$12.50$13.00$13.50$13.54
Jul 28, 2026Aug 27, 2026Sep 11, 2026Sep 26, 2026Oct 26, 2026

Oct 26, 2025 $15.13 → Oct 26, 2026 $13.54 −10.5%

$15.14$12.27$13.00$14.00$13.54
Oct 26, 2025Feb 24, 2026Apr 26, 2026Jun 26, 2026Oct 26, 2026

Jul 12, 2024 $50.00 → Oct 26, 2026 $13.54 −72.9%

$50.49$12.27low$20.00$30.00$40.00$13.54
Jul 12, 2024Apr 16, 2025Sep 3, 2025Jan 20, 2026Oct 26, 2026

Vs its set

Over the 90 days to Oct 26, 2026: this card +2.2%; the median other card in Professor Program Promos +5.0% (40 others).

Market details

Record

Price history Jul 12, 2024 to Oct 26, 2026

Highest$50.49Aug 15, 2024 to Oct 28, 2024
Lowest$12.27Aug 15, 2026 to Aug 19, 2026
Vs highest73% below $50.49

Price changes, last 30 days

DatePriceChange
Oct 11$13.74 → $13.40−2.5%Show on chart
Oct 14$13.40 → $13.54+1.0%Show on chart

Other versions of this card (2)

Same set: Professor Program Promos (40)

Keep exploring

Live market

Newest TCGplayer value: Oct 26, 2026. Prices in USD. Card names and images © their respective publishers. See how these prices are made.