Professor's Research (Professor Magnolia)
Sword & Shield Base Set (2020), Pokémon, 178/202, Rare Holo, art by Yusuke Ohmura
Holofoil, Near Mint
$0.17
TCGplayer market price (an average of recent sales)
As of Oct 26 (yesterday). Unchanged since Oct 18.
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Price trend
For the Holofoil printing.
Oct 19 $0.17 → Oct 26, 2026 $0.17 0.0%
Sep 26 $0.22 → Oct 26, 2026 $0.17 −22.7%
Jul 28 $0.28 → Oct 26, 2026 $0.17 −39.3%
Oct 26, 2025 $0.27 → Oct 26, 2026 $0.17 −37.0%
Feb 8, 2024 $0.25 → Oct 26, 2026 $0.17 −32.0%
Vs its set
Over the 90 days to Oct 26, 2026: the Holofoil printing −39.3%; the median other card in Sword & Shield Base Set +4.5% (224 others).
Market details
Record
Price history Feb 8, 2024 to Oct 26, 2026
Price changes, last 30 days
| Date | Price | Change | |
|---|---|---|---|
| Sep 27 | $0.22 → $0.21 | −4.5% | Show on chart |
| Sep 30 | $0.21 → $0.19 | −9.5% | Show on chart |
| Oct 5 | $0.19 → $0.17 | −10.5% | Show on chart |
| Oct 6 | $0.17 → $0.18 | +5.9% | Show on chart |
| Oct 18 | $0.18 → $0.17 | −5.6% | Show on chart |
Same set: Sword & Shield Base Set (225)
Same artist: Yusuke Ohmura (61)
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Live market
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Newest TCGplayer value: Oct 26, 2026. Prices in USD. Card names and images © their respective publishers. See how these prices are made.