Professor's Research

ex Start Decks · #135/139 · None · 2023JPN

$0.25
Market price ▲ 0.0% (30d)
Prices as of Nov 5, 2026
-50%off ATH $0.50 · Sep 2025
Market data

Price history

Normal▲ 0.0% 7d
Low $0.10Mid $0.25

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Graded market

Graded values

updated 2026-11-05
Grade 6 est.$0.48
Grade 5 est.$0.40
Grade 4 est.$0.33
Grade 3 est.$0.28
Grade 2 est.$0.23
Grade 1 est.$0.19

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$0.50

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

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How much is Professor's Research #135/139 worth?

Right now (November 5, 2026) the going rate for an ungraded Professor's Research #135/139 from ex Start Decks is about $0.25.

We update this valuation every night from live market data and verify it against real completed sales — see the chart above for how Professor's Research has moved over time.

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