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Professor's Research [Professor Sada] - 189/198
Rare · #189/198
Professor's Research [Professor Sada] #189/198 (SV01: Scarlet & Violet Base Set) is worth about $0.36 today, the Near Mint market price from TCGplayer sales as of 2026-10-02.
price trend and all-time high: more ↓less ↑
Professor's Research [Professor Sada] #189/198 is trending up: $0.36 today, up 13% in 30 days and 5% below its all-time high of $0.38 (2026-09-16). TCGplayer market price as of 2026-10-02, tracked daily since 2024-02-08. chart →
illustrated by kirisAki
Price data for your app or store: API and daily history since 2024 ·
PRINTINGS · WHICH ONE IS YOURS?
Professor's Research #189/198 comes in 5 printings we track: the priciest is the Promo Reverse Holofoil from Professor Program Promos at $13.74 and the cheapest shown is the Rare Holofoil from SV01: Scarlet & Violet Base Set at $0.17 (TCGplayer market, 2026-10-02).
- Promo Reverse Holofoil from Professor Program Promos$13.74
- Rare Holofoil from Prize Pack Series Cards$0.49
- Rare Reverse Holofoil from SV01: Scarlet & Violet Base Set · this page$0.36
- Rare Normal from Prize Pack Series Cards$0.18
- Rare Holofoil from SV01: Scarlet & Violet Base Set · this page$0.17
LOADING TAPE
WORTH GRADING?
WHERE TO BUY AND SELL
Reverse Holofoil · no eBay scan yetBuy-side estimate
$0.36
THINa patient buyer pays about $0.36 delivered, from live asks, not sales
show the work →
TCGplayer only, no eBay scan yet
| TCGplayer market | $0.36 | verify ↗ |
| TCGplayer lowest ask | $0.01 |
Single source: TCGplayer market (no usable eBay asks in the last scan).
The verdict · premium
Cards 3-15% off their high after a month up 5-25% were higher 90 days later 86% of the time in our archive since 2024 (20,865 cases).
The median move, the verdict and the grade-worthy math: try Premium free for 7 days →GAME DATA[ + ] SHOW[ × ] HIDE
- CARD TYPE
- Supporter
- CARD TEXT
- Discard your hand and draw 7 cards. You may play only 1 Supporter card during your turn.
MORE BY KIRISAKI
FULL CATALOG →
MORE FROM SCARLET & VIOLET BASE SET
FULL SET →
PRICE FAQ
Why does Professor's Research #189/198 have different prices?
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Professor's Research #189/198 was printed 5 ways and each one sells separately: Promo Reverse Holofoil from Professor Program Promos $13.74; Rare Holofoil from Prize Pack Series Cards $0.49; Rare Reverse Holofoil from SV01: Scarlet & Violet Base Set $0.36; Rare Normal from Prize Pack Series Cards $0.18; Rare Holofoil from SV01: Scarlet & Violet Base Set $0.17 (TCGplayer market, 2026-10-02). Check the set, the rarity mark and any parallel foil, manga art or edition stamp on your copy to know which price is yours; TickerMint prices every printing on its own page.
What is Professor's Research [Professor Sada] - 189/198 (SV01: Scarlet & Violet Base Set) worth today?
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Professor's Research [Professor Sada] - 189/198 [Reverse Holofoil] has a TCGplayer market price of $0.36 as of 2026-10-02. Across 2 tracked variants, latest prices range from $0.17 to $0.36.
Is Professor's Research [Professor Sada] - 189/198 going up or down in price?
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Professor's Research [Professor Sada] #189/198 is trending up: $0.36 today, up 13% in 30 days and 5% below its all-time high of $0.38 (2026-09-16). TCGplayer market price as of 2026-10-02, tracked daily since 2024-02-08. A 30-day rise this size usually follows a supply squeeze or a new format result; check the eBay book depth before buying in.
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