Professor's Research [Professor Birch] — 221

Market read

As of Sep 4, 2026, the cheapest current listing for Professor's Research [Professor Birch] — 221 is $0.13, and TCGplayer's market price is $0.25. Measured against a 7-day trailing median of $0.24, the current ask sits 45.8% below. Day over day the ask moved down 12.5%. Confidence is moderate: 41 daily observations and the ask sits 48% below the market price. It is one of 273 Promo cards we track in SV: Scarlet & Violet Promo Cards (282 cards in the set overall). Prices are asks from current listings, not completed sale prices, and the snapshot refreshes once daily.