Professor's Research [Professor Willow].
updated Aug 13, 2026
![Professor's Research [Professor Willow] SWSH178 from Sword & Shield Promo Cards](https://tcgplayer-cdn.tcgplayer.com/product/278705_in_400x400.jpg)
Price history and graded value
Grading odds
No population report for this card, so the prices below are the best case rather than the likely one.
1 of the 2 grades priced above had no sales at that grade, so the figure is modelled from the grades that did rather than observed.
A Grade 9.5 sells for $2.00 against $0.60 raw plus a $25 fee. Without a population report we cannot weight that by the odds, so treat it as the best case: most submissions come back below the top grade.
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The same card in other sets
What moves the price of this card
The Professor's Research [Professor Willow] on this page is the Holofoil printing from Sword & Shield Promo Cards, and it trades at $0.51 in near mint condition. Only one printing of this card was produced, so there is no cheaper version to confuse it with.
Condition does most of the work below the surface. A copy with soft corners or a print line off centre trades well under the market price shown here, and a copy clean enough to grade trades well above it. Before you value your own copy, look at the corners under a light and check the centring on the back, where most cards give themselves away.