Professor Program Promos · #189/198
Professor's Research [Professor Sada]
Professor's Research [Professor Sada] (Professor Program Promos #189/198) trades around $13.90 raw and $405.62 graded PSA 10 as of July 16, 2026.
- Illustrator
- kirisAki
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![Professor's Research [Professor Sada] 189/198 from Professor Program Promos](https://tcgplayer-cdn.tcgplayer.com/product/556953_in_800x800.jpg)
I · Specifications
Card details
- Set
- Professor Program Promos
- Number
- #189/198
- Rarity
- Promo
- Type
- Supporter
- Illustrator
- kirisAki
Card
- Raw market
- $13.90Reverse Holo
- PSA 9
- $60.544.4× raw
- PSA 10
- $405.6229.2× raw
Pricing live secondary market
All variants & conditions
| Variant / Condition | Price |
|---|---|
| Reverse Holofoil | $13.90 |
| Near Mint | $13.90 |
II · Reference
Common questions
How much is Professor's Research [Professor Sada] - 189/198 Professor Program Promos #189/198 worth?
Raw (Near Mint, ungraded) copies have a market price of approximately $13.90. PSA 9 copies trade around $60.54. PSA 10 copies trade around $405.62. Prices are updated daily from publicly available secondary-market data.
How rare is Professor's Research [Professor Sada] - 189/198 #189/198?
Professor's Research [Professor Sada] - 189/198 is a Promo card in Professor Program Promos. Rarer cards typically command higher market prices.
Who illustrated Professor's Research [Professor Sada] - 189/198 #189/198?
Professor's Research [Professor Sada] - 189/198 #189/198 was illustrated by kirisAki.
Should I grade Professor's Research [Professor Sada] - 189/198?
PSA 10 copies trade around $406, roughly 29× the raw market price ($14). Grading typically costs $25–$75 and takes 2–6 months. The card needs to be near-perfect (centered, sharp corners, no surface scratches) to grade PSA 10 — inspect with a loupe before submitting.
III · From the Same Set
