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Professor's Research [Professor Sada] - 189/198
Promo · #189/198
Professor's Research [Professor Sada] #189/198 (Professor Program Promos) is worth about $13.74 today, the Near Mint market price from TCGplayer sales as of 2026-10-03.
price trend and all-time high: more ↓less ↑
Professor's Research [Professor Sada] #189/198 is holding steady: $13.74 today, flat over 30 days and 18% below its all-time high of $16.66 (2025-09-27). TCGplayer market price as of 2026-10-03, tracked daily since 2024-07-12. chart →
Price data for your app or store: API and daily history since 2024 · CSV download
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 · this page$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
LOADING TAPE
WORTH GRADING?
WHERE TO BUY AND SELL
Reverse Holofoil · no eBay scan yetBuy-side estimate
$13.74
THINa patient buyer pays about $13.74 delivered, from live asks, not sales
show the work →
TCGplayer only, no eBay scan yet
| TCGplayer market | $13.74 | verify ↗ |
| TCGplayer lowest ask | $9.99 |
Single source: TCGplayer market (no usable eBay asks in the last scan).
The verdict · premium
Cards 15-40% off their high after a flat month were higher 90 days later 69% of the time in our archive since 2024 (19,883 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.
MORE FROM PROFESSOR PROGRAM PROMOS
FULL SET →
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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 would a card shop pay for Professor's Research [Professor Sada] - 189/198?
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Shops and show vendors commonly offer about 70% of market in cash and 80% in store credit. At today's $13.74 market price that is roughly $9.62 cash or $10.99 trade for a near-mint copy. Selling it yourself on TCGplayer or eBay nets more after fees; see the seller-net answer below.
What is Professor's Research [Professor Sada] - 189/198 (Professor Program Promos) worth today?
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Professor's Research [Professor Sada] - 189/198 [Reverse Holofoil] has a TCGplayer market price of $13.74 as of 2026-10-02.
Is Professor's Research [Professor Sada] - 189/198 going up or down in price?
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