Professor's Research [Professor Willow] - SWSH178
SWSH Promos · #SWSH178 · Promo
![Professor's Research [Professor Willow] - SWSH178 — SWSH Black Star Promos #SWSH178](https://tcgplayer-cdn.tcgplayer.com/product/278705_in_800x800.jpg)
Professor's Research [Professor Willow] - SWSH178
SWSH Promos · #SWSH178 · Promo
Overview
Raw
$0.41
Recent trading $0.44
Trading in line with its recent sales.
Below recentRecentAbove recent
Price chart
Price history
Sep 12, 2026
Market
Supply & Demand
TCGplayer · last 30 days
Sold / wk
18
Demand pressure5% · soft
softhot
Supply trend · coming soon — banking TCGplayer listings history.
TCGplayer sales · sold per day
Supply is the TCGplayer listing count; demand pressure = weekly TCGplayer sales ÷ listings (soft → hot), a single-venue sell-through read. The supply-trend gauge reads eBay where we have it, with the TCGplayer listings trend surfacing as its history matures. Descriptive market context, not a forecast.
Across HyperPotion
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