Black Belt's TrainingProfessor's ResearchProfessor's Research:
Professor's Research: 
Scarlet & Violet Black Star Promos 221
TCGplayer
$0.20
Down $0.02 (9.09%)· 30D
No change · 7D
Cardmarket
– not listed
Not listed
Price history
- TCGplayer
Prices
TCGplayer
Raw Price- Non-holo$0.20
Cardmarket
Raw Price- Non-holo– not listed
Card details
- Rarity
- Promo
- Card type
- Trainer
- Illustrator
- Hideki Ishikawa
- Regulation
- G
- Released
- Jan 1, 2023
Price summary
Professor's Research 221 is worth about $0.20 near mint, the TCGplayer price, as of Nov 11, 2026. It is down $0.02 (9.1%) over the last 30 days.
Low and average prices
| Printing | TCG low | CM 30-day avg |
|---|---|---|
| Non-holo | $0.12 | —Not listed |
Euro prices convert at the ECB rate of Nov 10, 2026: 1 EUR = 1.1214 USD. Near-mint, ungraded copies.
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219PromoBlack Belt's Training
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222PromoProfessor's Research
223PromoProfessor's Research
224Promo7Professor's Research in other sets
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150/159Rare UltraProfessor's ResearchHolo$2.53
078/078Rare UltraProfessor's ResearchHolo$2.34
SWSH152PromoProfessor's ResearchPromo$2.15
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