Professor's Research [Professor Oak]
Ungraded card references. Condition and selling costs affect what you receive; graded slab values are not covered.
Professor's Research [Professor Oak] #122/131 from Professor Program Promos (Reverse Holofoil): TCGPlayer US-market reference US$1.83, 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 · 7 Oct 2026 – 23 Oct 2026
8 recorded price points. Change compares the first and last points shown.
View recorded prices as a table
| Date | Market price |
|---|---|
| 7 Oct 2026 | $1.99 |
| 10 Oct 2026 | $1.94 |
| 15 Oct 2026 | $1.83 |
| 16 Oct 2026 | $1.83 |
| 17 Oct 2026 | $1.83 |
| 20 Oct 2026 | $1.83 |
| 21 Oct 2026 | $1.83 |
| 23 Oct 2026 | $1.56 |
Sales History
4 sold · all variants(30D)Sales recorded · 21 Sept 2026 – 20 Oct 2026. Sales are grouped into reporting periods; the final date is the latest available data.
Showing Reverse Holofoil - Near Mint - English
View recorded sales data
| Date | Units sold | Transactions | Market price | Details |
|---|---|---|---|---|
| 23/09/2026 | 0 | 0 | — | View sales |
| 26/09/2026 | 0 | 0 | — | View sales |
| 29/09/2026 | 0 | 0 | — | View sales |
| 02/10/2026 | 0 | 0 | — | View sales |
| 05/10/2026 | 0 | 0 | — | View sales |
| 08/10/2026 | 1 | 1 | $1.99 | View sales |
| 11/10/2026 | 2 | 2 | $1.88 | View sales |
| 14/10/2026 | 0 | 0 | $1.83 | View sales |
| 17/10/2026 | 0 | 0 | $1.83 | View sales |
| 20/10/2026 | 1 | 1 | $1.74 | 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.