Professor Oak's New Theory 101/123

Professor Oak's New Theory 101/123 from HeartGold SoulSilver has a current TCGplayer market price of $0.82. It is down +8.9% over the past 30 days. A PSA 10 copy is valued around $45.84. At current prices, grading a top-grade copy looks worthwhile.

Price Snapshot

Where to Buy

TCGplayer for raw copies (condition is graded by the marketplace, not the seller). eBay for slabs. Links may earn us a commission at no cost to you.

Graded Prices

From $0.82 raw to $45.84 in a PSA 10, after ~$25 grading, tracked shipping, and eBay fees. Grades below 10 return less — most cards need a realistic 10 to profit. Not financial advice.

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