Pokémon · Expedition · English
Professor Oak's Research 149/165 price
Uncommon · Illustrated by Ken Sugimori
Estimated market value. Not a sale offer.
Ungraded price updated Oct 1, 2026 · About this price
Price history
Ungraded · Normal · Lightly Played · USD
Use Left and Right arrows to explore prices. Home selects the first observation; End selects the latest.
- Change in range
- +$0.05 (+4.1%)
- Low
- $1.14
- High
- $1.31
Apr 5, 2026–Sep 30, 2026 · 90 observations
View historical prices
| Date | Market estimate |
|---|---|
| Sep 30, 2026 | $1.27 |
| Sep 28, 2026 | $1.27 |
| Sep 26, 2026 | $1.27 |
| Sep 24, 2026 | $1.27 |
| Sep 22, 2026 | $1.24 |
| Sep 20, 2026 | $1.31 |
| Sep 18, 2026 | $1.29 |
| Sep 16, 2026 | $1.31 |
| Sep 14, 2026 | $1.29 |
| Sep 12, 2026 | $1.29 |
| Sep 10, 2026 | $1.29 |
| Sep 8, 2026 | $1.28 |
| Sep 6, 2026 | $1.28 |
| Sep 4, 2026 | $1.28 |
| Sep 2, 2026 | $1.26 |
| Aug 31, 2026 | $1.24 |
| Aug 29, 2026 | $1.29 |
| Aug 27, 2026 | $1.29 |
| Aug 25, 2026 | $1.29 |
| Aug 23, 2026 | $1.29 |
| Aug 21, 2026 | $1.29 |
| Aug 19, 2026 | $1.29 |
| Aug 17, 2026 | $1.29 |
| Aug 15, 2026 | $1.19 |
| Aug 13, 2026 | $1.19 |
| Aug 11, 2026 | $1.16 |
| Aug 9, 2026 | $1.20 |
| Aug 7, 2026 | $1.20 |
| Aug 5, 2026 | $1.20 |
| Aug 3, 2026 | $1.19 |
| Aug 1, 2026 | $1.20 |
| Jul 30, 2026 | $1.14 |
| Jul 28, 2026 | $1.14 |
| Jul 26, 2026 | $1.20 |
| Jul 24, 2026 | $1.18 |
| Jul 22, 2026 | $1.18 |
| Jul 20, 2026 | $1.19 |
| Jul 18, 2026 | $1.19 |
| Jul 16, 2026 | $1.19 |
| Jul 14, 2026 | $1.18 |
| Jul 12, 2026 | $1.23 |
| Jul 10, 2026 | $1.23 |
| Jul 8, 2026 | $1.25 |
| Jul 6, 2026 | $1.26 |
| Jul 4, 2026 | $1.25 |
| Jul 2, 2026 | $1.16 |
| Jun 30, 2026 | $1.16 |
| Jun 28, 2026 | $1.17 |
| Jun 26, 2026 | $1.28 |
| Jun 24, 2026 | $1.28 |
| Jun 22, 2026 | $1.28 |
| Jun 20, 2026 | $1.28 |
| Jun 18, 2026 | $1.29 |
| Jun 16, 2026 | $1.23 |
| Jun 14, 2026 | $1.25 |
| Jun 12, 2026 | $1.28 |
| Jun 10, 2026 | $1.28 |
| Jun 8, 2026 | $1.28 |
| Jun 6, 2026 | $1.28 |
| Jun 4, 2026 | $1.28 |
| Jun 2, 2026 | $1.28 |
| May 31, 2026 | $1.25 |
| May 29, 2026 | $1.23 |
| May 27, 2026 | $1.23 |
| May 25, 2026 | $1.23 |
| May 23, 2026 | $1.23 |
| May 21, 2026 | $1.23 |
| May 19, 2026 | $1.23 |
| May 17, 2026 | $1.25 |
| May 15, 2026 | $1.24 |
| May 13, 2026 | $1.23 |
| May 11, 2026 | $1.25 |
| May 9, 2026 | $1.25 |
| May 7, 2026 | $1.23 |
| May 5, 2026 | $1.20 |
| May 3, 2026 | $1.23 |
| May 1, 2026 | $1.23 |
| Apr 29, 2026 | $1.20 |
| Apr 27, 2026 | $1.21 |
| Apr 25, 2026 | $1.26 |
| Apr 23, 2026 | $1.28 |
| Apr 21, 2026 | $1.23 |
| Apr 19, 2026 | $1.21 |
| Apr 17, 2026 | $1.20 |
| Apr 15, 2026 | $1.21 |
| Apr 13, 2026 | $1.21 |
| Apr 11, 2026 | $1.19 |
| Apr 9, 2026 | $1.19 |
| Apr 7, 2026 | $1.19 |
| Apr 5, 2026 | $1.22 |
Where these prices come from
Market estimates from Pokémon Price Tracker for this exact product, printing and condition. Historical charts include up to 365 supplier observations over available history; points may be sampled or interpolated. Coverage varies by card. History checked Oct 1, 2026. Read the methodology.
About graded prices
Graded values are Pokémon Price Tracker’s eBay estimates for the product, not a verified match to the selected printing. The supplier’s smart estimate is used when available and not flagged as an outlier; otherwise we use its reported median. Sparse or old sales can make these estimates uncertain. The chart above shows ungraded market history.
- PSA 7: smart estimate; low confidence; 2 sales in source sample; calculated Sep 15, 2026; last sale Sep 13, 2026.
- PSA 8: smart estimate; low confidence; 1 sales in source sample; calculated Sep 15, 2026; last sale Sep 7, 2025.
- PSA 9: smart estimate; low confidence; 3 sales in source sample; calculated Sep 15, 2026; last sale Jul 2, 2026.
- PSA 10: smart estimate; low confidence; 3 sales in source sample; calculated Sep 15, 2026; last sale Jul 17, 2026.
Latest sales
eBay · USDPrinting prices
Ungraded near mint · USD
| Printing | Market estimate |
|---|---|
| Normal | $2.20 |
| Reverse Holofoil | $36.56 |
