Professor's Research

SWSH Black Star Promos · #SWSH178/307 · Promo · 2019

$0.61

Market price ▼ 12.9% (30d)

Prices as of Aug 14, 2026

with Pokemon Go Code Unlimited

SupporterArt · Yusuke Kozaki

53.5×PSA 10 vs raw

-88%off ATH $5.13 · Aug 2022

Market data

Printings & price history

with Pokemon Go Code▲ 0.0% 7d$0.61

Low $0.40Mid $0.75

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Graded market

Graded values

updated 2026-08-13

Grade 6 est.$0.57

Grade 5 est.$0.48

Grade 4 est.$0.40

Grade 3 est.$0.33

Grade 2 est.$0.27

Grade 1 est.$0.23

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

Grade 9.5 price history$2.00

Grade 9.5 chart is building — graded values are tracked nightly, a new point appears each day.

How much is Professor's Research #SWSH178/307 worth?

Professor's Research #SWSH178/307 is a Promo card from SWSH Black Star Promos (2019) — today it trades at roughly $0.61 ungraded. Across the 2 printings we track, copies run anywhere from $0.12 to $19.98 depending on the version you're holding.

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.

Collecting SWSH Black Star Promos?Full master set guide — every card, chase list, and completion cost→

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