#7692
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✦ Chase Index #7692·Set rank #146
Professor Oak's Research
Uncommon
EXPEDITION BASE SET·#149·SEP 2002·TRAINER
Uncommon
Current market price
$1.88
-92.8%
7d
-92.8%
All time
NORMAL · TCGPLAYER · 2026-05-13
01 · All-time high
$26.08
9 snapshots
02 · All-time low
$1.85
since 2026-05-05
03 · Set rank
#146
of 165 in EX
04 · Tracking since
2026-05-05
9 price snapshots
01 · Price history
9 snapshots
Building price history.
Daily market-price snapshots — every data point is a dated price reading, never an estimate.
Total return
-92.8%
Price range
$1.85 → $26.08
Snapshots
9
Tracking since
2026-05-05
02 · About this card
Card facts · attributes
Expedition Base Set, tracked.
Professor Oak's Research is a Uncommon from Expedition Base Set. Released SEP 2002.
Currently ranked #7692 on the Chase Index - our composite score across price, community chases, and page views.
Since first tracked, the price has declined 92.8% in total.
Card number
#149
Released
SEP 2002
Rarity
Uncommon
Supertype
Trainer
Series
E-Card
Market source
Market price · Updated daily
03 · Variants
2 variants
Different variants, different prices.
Holofoil, reverse, 1st edition — each variant trades at its own price band. The current market column is what feeds the index.
| Variant | Low | Mid | Market | High |
|---|---|---|---|---|
| Normalcurrent | $0.84 | $1.78 | $1.88 | $6.20 |
| Reverse Holofoil | $6.95 | $16.99 | $26.08 | $380 |
04 · Related cards
From the same set
More from Expedition Base Set.
Top chases from the same expansion — ranked by Chase Index score.
06 · Reference desk
Professor Oak's Research, explained.
Everything about this card — the price, the variants, and how we track it.
3 questions answered
Q.01
Is Professor Oak's Research from Expedition Base Set a good investment?
We track prices, not provide investment advice. The Chase Index rank and price history above show how collector demand has moved since we started tracking this card.
Q.02
How is the market price determined?
We pull daily snapshots of the market price - the median of recent Near Mint sales. The current figure reflects the Normal variant.
Q.03
What does the Chase Index rank mean?
The Chase Index ranks cards on a composite score: 50% market price percentile, 30% community chases, 20% recent page views. A card near the top leads on all three dimensions.