HeartGold SoulSilver ยท #101/123
Professor Oak's New Theory #101/123 from HeartGold SoulSilver has a raw market price of $0.93.

| Market price | $0.93 | raw, ungraded |
|---|---|---|
| Lowest | $0.19 |
| Date | Price | Grade | Source |
|---|---|---|---|
| 2026-09-12 | $0.83 | Ungraded | TCGplayer |
| 2026-09-08 | $0.47 | Ungraded | TCGplayer |
| 2026-09-02 | $0.80 | Ungraded | TCGplayer |
| 2026-08-28 | $0.60 | Ungraded | TCGplayer |
| 2026-08-26 | $0.47 | Ungraded | TCGplayer |
| 2026-08-24 | $0.70 | Ungraded | TCGplayer |
| 2026-08-14 | $0.80 | Ungraded | TCGplayer |
| 2026-08-13 | $0.50 | Ungraded | TCGplayer |
| 2026-08-12 | $0.89 | Ungraded | eBay |
| 2026-08-01 | $1.00 | Ungraded | TCGplayer |
| 2026-07-31 | $2.00 | Ungraded | eBay |
| 2026-07-28 | $0.90 | Ungraded | TCGplayer |
| 2026-07-27 | $1.60 | Ungraded | eBay |
| 2026-07-20 | $2.79 | Ungraded | eBay |
| 2026-07-18 | $1.99 | Ungraded | eBay |
| 2026-07-16 | $1.15 | Ungraded | eBay |
| 2026-07-11 | $1.99 | Ungraded | eBay |
| 2026-07-10 | $1.97 | Ungraded | TCGplayer |
| 2026-07-06 | $0.65 | Ungraded | TCGplayer |
| 2026-07-02 | $1.03 | Ungraded | eBay |
The 20 most recent of 21 recorded sales.
Prices last refreshed 2026-07-06. Every figure is an observed sale.