SWSH Black Star Promos · #SWSH178 · 2019
Market price: The going rate for an ungraded copy of this exact printing, from actual sales data — TCGplayer for USD, Cardmarket for EUR. Updated daily. · Normal (non-holo): The plain printing — no foil anywhere. Price trackers say “Normal,” collectors say “non-holo”; usually the cheapest version of the card.
$0.59
down11% · 26dvia TCGplayer, updated Oct 9, 2026
Set rank: Where this card's market price ranks among the priced cards in its set — #1 is the set's most valuable card. in SWSH Black Star Promos
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Browse eBay now →What it actually sells for
Our chart tracks TCGplayer's market price and the asking prices of live eBay listings — what sellers want, not what buyers paid. Completed sale prices live on eBay itself: see recent sold listings for this card →
Right now Professor's Research trades at $0.59 for the Normal printing (TCGplayer market price).
That makes it the 286th most valuable of SWSH Black Star Promos's 304 priced cards. (Special Delivery Bidoof leads the set at $565.) Since we started tracking it on Feb 8, 2024, it's eased 47.8% — from $1.13 to $0.59. Over the last year it's fallen 10.6%, from $0.66 to $0.59. The 90-day move: down 15.7%, $0.70 to $0.59. Its highest point since we started tracking (February 2024) was $1.13 in February 2024; its lowest, $0.41 in July 2025. Over the last 30 days it's touched $0.66 at the top and $0.59 at the bottom.
About $0.59 for an ungraded copy. That's the TCGplayer market price for the Normal printing, updated Oct 9, 2026. Graded copies in great shape usually sell for more. What grading means →
Down about 16% over the last 3 months — from $0.70 to $0.59 (TCGplayer market price). Zoom out a whole year and it's down 11%. Prices move a little every day, so the chart on this page has the freshest line.
The highest market price we've logged is $1.13 — that was February 2024. We've been writing this card's price down since February 2024, so that's the record on our watch, not an all-time record.
eBay is the easiest place — this page links straight to the live listings for Professor's Research (SWSH Black Star Promos #SWSH178). Check the photos and the seller's rating first. That's the rule.
Cards trading near $0.59 today.
SWSH Black Star Promos
