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Professor's Research: SWSH Black Star Promos SWSH178

Professor's Research SWSH178 SWSH Black Star Promos Pokémon card, Promo
Printing shown in the price chart

TCGplayer

$0.55

Down $0.02 (3.51%)· 30D

Down $0.04 (6.78%)· 7D

Cardmarket

€1.74

Up €0.05 (2.96%)· 30D

Down €0.27 (13.43%)· 7D

TCGplayer

$0.42

Down $0.03 (6.67%)· 30D

Up $0.03 (7.69%)· 7D

Cardmarket

– not listed

Not listed

Price history

  • TCGplayer
  • Cardmarket
Range

Cardmarket in US dollars at 1 EUR = 1.1214 USD (ECB).

Prices

TCGplayer

Raw Price
  • Non-holo$0.55
  • Vertical Line Holo$0.42

Cardmarket

Raw Price
  • Non-holo€1.74
  • Vertical Line Holo– not listed

Card details

Rarity
Promo
Card type
Trainer · Supporter
Illustrator
Yusuke Kozaki
Regulation
D
Released
Nov 15, 2019

Price summary

Professor's Research SWSH178 Non-holo is worth about $1.25 near mint, the average of the TCGplayer and Cardmarket prices, as of Nov 11, 2026. It is up $0.02 (1.6%) over the last 30 days.

How to tell the printings apart
  • Non-holo

    No foil anywhere on the card.

  • Vertical Line Holo
Low and average prices
PrintingTCG lowCM 30-day avg
Non-holo$0.30€2.47
Vertical Line Holo$0.14—Not listed

Euro prices convert at the ECB rate of Nov 10, 2026: 1 EUR = 1.1214 USD. Near-mint, ungraded copies.

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