Professor's Research [Professor Sada]
![Professor's Research [Professor Sada] 189/198 from Scarlet & Violet Base Set](/cards/475423_400.jpg)
- Number
- 189/198
- Rarity
- Rare
- Released
- Mar 31, 2023
Sold price movement
- 12 months ago
- $0.25£0.19€0.22
- Today
- $0.33£0.25€0.29
- Change
- +$0.08+£0.06+€0.07 (+32.0%)
Market activity
| Price type | Pop share | PopulationPop | Sold 90d | Median | Price |
|---|---|---|---|---|---|
| Raw | – | 6 | $1.48£1.11€1.30 | $0.33£0.25€0.29 | |
| PSA 1 | 1 | – | – | – | |
| PSA 6 | 1 | – | – | – | |
| PSA 7 | 3 | – | – | – | |
| PSA 8 | 12 | – | – | – | |
| PSA 9modelled | 36 | – | – | $10.59£7.97€9.33 | |
| CGC/BGS 9.5modelled | – | – | – | $12£9.03€10.57 | |
| PSA 10modelled | 17 | – | – | $31.22£23.50€27.49 | |
About these prices
24.3% of copies sent to PSA come back a 10. Sold and median are 90 days of PSA sales. The 9.5 is a CGC and BGS grade, so it carries no PSA population.
Priced from 85 completed sales, updated Sep 25, 2026.
Price history
Recent sales
85 completed listings on eBay
Professor's Research [Professor Sada] - 189/198 #189 Near Mint English$0.25£0.19€0.22Professor's Research [Professor Sada] - 189/198 #189 Near Mint English$0.40£0.30€0.35Professor's Research [Professor Sada] - 189/198 #189 Near Mint English$0.07£0.05€0.06Professor's Research [Professor Sada] - 189/198 #189 Near Mint English$0.40£0.30€0.35Professor's Research [Professor Sada] - 189/198 #189 Near Mint English$0.28£0.21€0.25Show 73 more
Professor's Research [Professor Sada] - 189/198 #189 Near Mint English$0.40£0.30€0.35Professor's Research [Professor Sada] - 189/198 #189 Near Mint English$0.20£0.15€0.18Professor's Research [Professor Sada] - 189/198 #189 Near Mint English$0.30£0.23€0.26Professor's Research [Professor Sada] - 189/198 #189 Near Mint English$0.03£0.02€0.03Professor's Research [Professor Sada] - 189/198 #189 Near Mint English$0.28£0.21€0.25Professor's Research [Professor Sada] - 189/198 #189 Near Mint English$0.40£0.30€0.35Professor's Research [Professor Sada] - 189/198 #189 Near Mint English$0.05£0.04€0.04Professor's Research [Professor Sada] - 189/198 #189 Near Mint English$0.11£0.08€0.10Professor's Research (Professor Sada) 189/198 Scarlet & Violet NM/M Pokemon 189/198$1.79£1.35€1.58PROFESSOR'S RESEARCH (PROFESSOR SADA) 189/198 RARE SCARLET & VIOLET POKEMON 189/198$1.89£1.42€1.66Pokemon Professor's Research (Professor Sada) (189/287) Scarlet & Violet NM$0.99£0.75€0.87PROFESSOR'S RESEARCH (PROFESSOR SADA) 189/198 RARE SCARLET & VIOLET POKEMON 189/198$1.89£1.42€1.66Pokémon TCG Professor's Research (Professor Sada) Scarlet & Violet-Base Set... 189/198$1£0.75€0.88Professor's Research: Professor Sada 189/198 Pokémon TGC Scarlet & Violet$1.19£0.90€1.058Cert 83463390Auction$6£4.52€5.28Pokémon TCG Professor's Research (Professor Sada) Scarlet & Violet - Base Set... 189/198$1.69£1.27€1.49Pokémon TCG Professor's Research (Professor Sada) Scarlet & Violet-BASE Set... 189/198$0.06£0.05€0.05Pokemon Professor's Research (Professor Sada) (189/258) Scarlet & Violet NM$0.99£0.75€0.87Pokémon TCG Professor's Research (Professor Sada) 189/198 Scarlet & Violet 189/198$1.20£0.90€1.06Pokémon TCG Professor's Research (Professor Sada) Scarlet & Violet Base Set #189 189/198$2£1.51€1.76Pokémon TCG Professor's Research (Professor Sada) Scarlet & Violet - Base Set... 189/198$0.01£0.01€0.01Pokémon TCG Professor's Research (Professor Sada) Scarlet & Violet - Base Set... 189/198$0.01£0.01€0.01Pokémon TCG Professor's Research (Professor Sada) Scarlet & Violet - Base Set... 189/198$1.27£0.96€1.12More from Scarlet & Violet Base Set
All 258 cards →
Slowpoke
Kirlia
RioluGrading odds
PSA has graded 70 copies. Where they landed:
Why the verdict weights the odds
Only 24.3% of copies reach a 10, which is why the top price is the wrong number to plan around. Weighting each grade’s PSA price by these odds, a submission is worth $13.04£9.81€11.48 on average against $100.32£75.51€88.35 for the card plus $79.99£60.20€70.44 at Regular, the cheapest level PSA will insure it at. That loses $87.28£65.69€76.87, so a copy is worth more raw.
3 of the 3 grades priced above had no sales at that grade, so the figure is modelled from the grades that did rather than observed.
Card facts
- Card number
- 189/198
- Rarity
- Rare
- Set released
- Mar 31, 2023
- PSA population, all printings
- 70
- Printings priced
- 2
Scarlet & Violet Base Set258 cards- Set value
- $759£571€668
- 7 day move
- -2.9%
Looking for a different one? All 91 Professor's Research cards we price →
The same card in other sets
What moves the price of this card
The Professor's Research [Professor Sada] on this page is the Reverse Holofoil printing from Scarlet & Violet Base Set, and it trades at $0.36£0.27€0.32 in near mint condition. The other 1 printing of the same card sits lower, which is normal: the scarcer print run always carries the premium.
Graded, it runs PSA 9 $10.59£7.97€9.33, CGC/BGS 9.5 $12£9.03€10.57, PSA 10 $31.22£23.50€27.49. PSA has graded 70 copies of it. 85 completed sales are on file.
What is a PSA 10 Professor's Research [Professor Sada] worth?
A PSA 10 Professor's Research [Professor Sada] from Scarlet & Violet Base Set sells for $31.22. 24.3% of the copies PSA has graded came back a 10, so that price is the best case rather than the one a submission should expect.
Is Professor's Research [Professor Sada] from Scarlet & Violet Base Set worth grading?
On the numbers, no. The average submission is worth $13.04 with every grade weighted by how often this card comes back at it, against $0.33 for a raw copy plus $99.99 to send it through PSA Regular, so it loses $87.28.
Condition does most of the work below the surface. A copy with soft corners or a print line off centre trades well under the market price shown here, and a copy clean enough to grade trades well above it, which is why the PSA 10 sits at $31.22£23.50€27.49. Before you value your own copy, look at the corners under a light and check the centring on the back, where most cards give themselves away.