Professor's Research

SWSH Black Star Promos, Pokémon, SWSH178, Promo, art by Yusuke Kozaki. TCGplayer product name: Professor's Research - SWSH178

Professor's Research

Printing: Holofoil · Near Mint

$0.41

TCGplayer market price (an average of recent sales)

As of Oct 18 (2 days ago). Unchanged since Oct 17.

Listed median$0.48asks on TCGplayer as of Oct 18 (1.2× the market price)

Change

7d−6.8% −$0.0330d+7.9% +$0.0390d−16.3% −$0.081y+2.5% +$0.01
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Related cards

Grookey$2.58Same setWooloo$2.46Same setCinccino$31.63Same setZamazenta V$0.94Same set

Price trend

Oct 11 $0.44 → Oct 18, 2026 $0.41 −6.8%

$0.45$0.42$0.43$0.44$0.41
Oct 11, 2026Oct 13, 2026Oct 14, 2026Oct 15, 2026Oct 18, 2026

Sep 18 $0.38 → Oct 18, 2026 $0.41 +7.9%

$0.45$0.38$0.40$0.42$0.44$0.41
Sep 18, 2026Sep 28, 2026Oct 3, 2026Oct 8, 2026Oct 18, 2026

Jul 20 $0.49 → Oct 18, 2026 $0.41 −16.3%

$0.52$0.38$0.40$0.45$0.50$0.41
Jul 20, 2026Aug 19, 2026Sep 3, 2026Sep 18, 2026Oct 18, 2026

Oct 18, 2025 $0.40 → Oct 18, 2026 $0.41 +2.5%

$0.52$0.33$0.35$0.40$0.45$0.41
Oct 18, 2025Feb 16, 2026Apr 18, 2026Jun 18, 2026Oct 18, 2026

Feb 8, 2024 $0.31 → Oct 18, 2026 $0.41 +32.3%

$0.52$0.23$0.30$0.40$0.41
Feb 8, 2024Dec 31, 2024Jun 13, 2025Nov 24, 2025Oct 18, 2026

Record

Price history Feb 8, 2024 to Oct 18, 2026

Highest$0.52Jul 26, 2026
Lowest$0.23Nov 18, 2024
Vs highest21% below $0.52

Price changes, last 30 days

DatePriceChange
Oct 2$0.43 → $0.44+2.3%Show on chart
Oct 3$0.44 → $0.43−2.3%Show on chart
Oct 4$0.43 → $0.44+2.3%Show on chart
Oct 12$0.44 → $0.45+2.3%Show on chart
Oct 13$0.45 → $0.43−4.4%Show on chart
Oct 17$0.43 → $0.41−4.7%Show on chart

Latest 6 of 9.

Vs its set

Over the 90 days to Oct 18, 2026: this card −16.3%; the median other printing in SWSH Black Star Promos −1.2% (318 other printings).

Keep exploring

Same artistMore by Yusuke KozakiSame setMore from SWSH Black Star PromosThe methodResearchGamesAll Pokémon setsTodayBiggest moves in Pokémon

Live market

Newest TCGplayer value: Oct 18, 2026. Prices in USD. Card names and images © their respective publishers. See how these prices are made.