Professor Oak's New Theory
HeartGold & SoulSilver · #101
IDX$0.82
MONARK BLEND
TCGPLAYER · THIS VARIANT
MKT$0.82
LOW/MED/HIGH$0.25 / $0.75 / $20.00
Trend▼ 4.7% · 7d
EBAY SOLD · ALL VARIANTS
MED$1.99
RANGE$1.00–$3.99
STALE · AS OF 2026-07-23
16 SALES · 71D · AS OF 2026-07-23
AS OF 2026-09-01
where to buy
affiliate links — monark may earn a commission
compare finish prices · 7compare ▾
- Normal$0.82$0.70–$0.97—▼ 4.7% · 7d
- Reverse Holo$6.92$3.06–$6.92×8.4· 0.0% · 7d
- Professor Program——
- WC Deck 2010 (LuxChomp of the Spirit: Yuta Komatsuda)——
- WC Deck 2011 (Megazone: Gustavo Wada)——
- WC Deck 2011 (Reshiphlosion: Christopher Kan)——
- WC Deck 2012 (Pesadelo Prism: Igor Costa)——
tcgplayer market · price · range · vs base · 7-day move
card data
- RARITY
- Uncommon
- TYPE
- Trainer · Supporter
- HP
- 0
- ILLUS
- Ken Sugimori
price summary
Professor Oak's New Theory (Normal) from HeartGold & SoulSilver #101 is worth $0.82 — the MONARK BLEND consensus as of 2026-09-01. TCGplayer market for this finish is $0.82 as of 2026-09-01; eBay sold median across all finishes of the card is $1.99 from 16 sales in the 71-day window to 2026-07-23. monark prices each finish separately. This card has 7 tracked finishes, including Normal · Reverse Holo · Professor Program.
