Professor's Research [Professor Birch] - 221
Ungraded card references. Condition and selling costs affect what you receive; graded slab values are not covered.
Professor's Research [Professor Birch] - 221 #221 from Professor Program Promos (Holofoil): TCGPlayer US-market reference US$28.99, updated 22 Oct 2026. Source currency: USD.
What does this price mean?
TCGPlayer is a US-market reference in USD. Cardmarket uses a Broad foil guide · EUR source, converted from EUR to USD; it is not UK-only pricing. Prices refer to the displayed printing. Your card's condition, language, grading and selling costs can affect what you receive.
US market price history · 4 Jul 2026 – 23 Oct 2026
61 recorded price points. Change compares the first and last points shown.
View recorded prices as a table
| Date | Market price |
|---|---|
| 4 Jul 2026 | $30.00 |
| 5 Jul 2026 | $30.00 |
| 6 Jul 2026 | $30.00 |
| 7 Jul 2026 | $30.00 |
| 8 Jul 2026 | $30.00 |
| 9 Jul 2026 | $30.00 |
| 10 Jul 2026 | $30.00 |
| 11 Jul 2026 | $30.00 |
| 12 Jul 2026 | $30.00 |
| 4 Aug 2026 | $30.00 |
| 5 Aug 2026 | $30.00 |
| 6 Aug 2026 | $30.00 |
| 7 Aug 2026 | $30.00 |
| 8 Aug 2026 | $30.00 |
| 9 Aug 2026 | $30.00 |
| 10 Aug 2026 | $30.00 |
| 11 Aug 2026 | $30.00 |
| 12 Aug 2026 | $30.00 |
| 13 Aug 2026 | $30.00 |
| 14 Aug 2026 | $30.00 |
| 15 Aug 2026 | $30.00 |
| 16 Aug 2026 | $30.00 |
| 17 Aug 2026 | $30.00 |
| 18 Aug 2026 | $30.00 |
| 19 Aug 2026 | $30.00 |
| 20 Aug 2026 | $30.00 |
| 21 Aug 2026 | $30.00 |
| 26 Aug 2026 | $29.99 |
| 27 Aug 2026 | $29.99 |
| 28 Aug 2026 | $29.99 |
| 29 Aug 2026 | $29.99 |
| 30 Aug 2026 | $29.99 |
| 31 Aug 2026 | $29.99 |
| 1 Sept 2026 | $29.99 |
| 2 Sept 2026 | $29.99 |
| 3 Sept 2026 | $29.99 |
| 4 Sept 2026 | $29.99 |
| 5 Sept 2026 | $29.99 |
| 6 Sept 2026 | $29.99 |
| 7 Sept 2026 | $29.99 |
| 8 Sept 2026 | $29.99 |
| 9 Sept 2026 | $29.99 |
| 10 Sept 2026 | $29.99 |
| 11 Sept 2026 | $29.99 |
| 12 Sept 2026 | $29.99 |
| 13 Sept 2026 | $29.99 |
| 16 Sept 2026 | $29.98 |
| 19 Sept 2026 | $29.98 |
| 22 Sept 2026 | $29.98 |
| 25 Sept 2026 | $29.98 |
| 28 Sept 2026 | $29.98 |
| 1 Oct 2026 | $29.98 |
| 4 Oct 2026 | $29.65 |
| 7 Oct 2026 | $29.65 |
| 10 Oct 2026 | $29.65 |
| 15 Oct 2026 | $28.99 |
| 16 Oct 2026 | $28.99 |
| 17 Oct 2026 | $28.99 |
| 20 Oct 2026 | $28.99 |
| 21 Oct 2026 | $28.99 |
| 23 Oct 2026 | $28.99 |
Sales History
1 sold · all variants(30D)Sales recorded · 17 Sept 2026 – 16 Oct 2026. Sales are grouped into reporting periods; the final date is the latest available data.
Showing Holofoil - Near Mint - English
View recorded sales data
| Date | Units sold | Transactions | Market price | Details |
|---|---|---|---|---|
| 19/09/2026 | 0 | 0 | $29.98 | View sales |
| 22/09/2026 | 0 | 0 | $29.98 | View sales |
| 25/09/2026 | 0 | 0 | $29.98 | View sales |
| 28/09/2026 | 0 | 0 | $29.98 | View sales |
| 01/10/2026 | 0 | 0 | $29.98 | View sales |
| 04/10/2026 | 1 | 1 | $29.65 | View sales |
| 07/10/2026 | 0 | 0 | $29.65 | View sales |
| 10/10/2026 | 0 | 0 | $29.65 | View sales |
| 13/10/2026 | 0 | 0 | $29.65 | View sales |
| 16/10/2026 | 0 | 0 | $29.65 | View sales |
Average recorded market price is the simple mean of reporting periods with a positive market price; it is not weighted by sales volume. A dash means no usable observation is available.