Professor's Research

SWSH Black Star Promos · #SWSH152/307 · Promo · 2019

$2.55
Market price ▲ 4.5% (30d)
Prices as of Nov 7, 2026
SupporterArt · Yuu Nishida
920graded pop
34%gem rate
35.3×PSA 10 vs raw
-60%off ATH $6.39 · Aug 2022
+$11.90EV to grade — marginal
Market data

Price history

Holofoil▲ 5.8% 7d
Low $1.49Mid $3.00

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Live listings

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Graded market

Graded values

PSA 10 report →updated 2026-11-07
Grade 6 est.$3.09
Grade 5 est.$2.60
Grade 4 est.$2.15
Grade 3 est.$1.79
Grade 2 est.$1.46
Grade 1 est.$1.24

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

PSA 10 price history$90.00

PSA 10 chart is building — graded values are tracked nightly, a new point appears each day.

Graded population census · updated 2026-09-18

PSA920 graded · 310 gem 10

Population data from PriceCharting, updated monthly.

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How much is Professor's Research #SWSH152/307 worth?

Professor's Research #SWSH152/307 is a Promo card from SWSH Black Star Promos (2019) — today it trades at roughly $2.55 ungraded.

Grading changes the math on this one: a PSA 10 is valued around $90.00, roughly 35.3x the raw price, while a PSA 9 sits near $13.76. 920 copies have been graded to date, and 34% of them came back a 10 — worth knowing before you pay grading fees.

Prices on this page refresh nightly from live TCGplayer market data and are cross-checked against actual sold prices, so a single inflated listing never becomes "the price". The chart above has the full history.

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

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