Professor's Research: Professor Birch #221 — Promo

PriceCharting market prices as of 2026-08-29:

TCGplayer market price: $0.25 (as of 2026-08-29)

Market context: ungraded price -18.2% over 30 days. -10.0% over 90 days.

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Live charts, history, and collection tools: https://tcginsider.net/sets/pokemon-promo/pokemon-promo-professor-s-research-professor-birch-221