Professor's Research

Start Deck 100 · #403/414 · 2021JPN

$0.99
Market price ▲ 0.0% (30d)
Prices as of Nov 4, 2026
1graded pop
100%gem rate
-50%off ATH $1.99 · Jul 2026
Market data

Price history

Normal▲ 4.2% 7d
Low $0.25Mid $0.99

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Graded market

Graded values

updated 2026-11-04
Grade 6 est.$1.85
Grade 5 est.$1.56
Grade 4 est.$1.29
Grade 3 est.$1.07
Grade 2 est.$0.88
Grade 1 est.$0.74

Grades 1–6 are estimates modeled from the raw price — PSA/CGC/BGS 7–10 and Ungraded are live tracked market values.

Ungraded price history$1.95

Ungraded chart is building — graded values are tracked nightly, a new point appears each day.

Graded population census · updated 2026-09-19

CGC1 graded · 1 gem 10

Population data from PriceCharting, updated monthly.

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How much is Professor's Research #403/414 worth?

A raw copy of Professor's Research #403/414 (Start Deck 100, 2021) is worth about $0.99 right now, based on the latest market data from November 4, 2026.

These figures come from nightly market-data syncs verified against completed sales. Use the chart above to see the trend before you buy or sell.

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