Professor Oak's New Theory 101/123, HeartGold & SoulSilver (Igor Costa)
- Set
- HeartGold & SoulSilver (HeartGold & SoulSilver series)
- Number
- 101/123
- Printing
- Igor Costa
- Rarity
- Uncommon
- Illustrator
- Ken Sugimori
- Near Mint value
- R6.88 (priced 2026-09-30)
Price by condition
- Near Mint: R6.88
- Lightly Played: R6.55
- Moderately Played: R5.07
- Damaged: R5.40
Other printings
- Normal: R12.28
- Reverse Holo: R114
- Christopher Kan: R10.97
- Gustavo Wada: R8.02
- Yuta Komatsuda: R13.10
Prices are market values converted to South African rand, updated daily. HaveFun scans Pokémon cards, prices them and tracks your collection.