![Professor's Research [Professor Willow] - SWSH178 (SWSH: Sword & Shield Promo Cards)](https://twcardimg7bk6gnhm7hygq.blob.core.windows.net/card-images-dev/pokemon/6acef70b75f169a024022775.png)
Professor's Research [Professor Willow] - SWSH178
SWSH: Sword & Shield Promo Cards · #SWSH178 · holo
$0.42
Prices last updated 2026-11-01.
| Condition | Market price | 90-day range |
|---|---|---|
| Damaged | $0.23 | $0.23 – $0.23 |
| Heavily Played | $0.28 | $0.28 – $0.28 |
| Lightly Played | $0.46 | $0.45 – $0.46 |
| Moderately Played | $0.30 | $0.30 – $0.30 |
| Near Mint | $0.41 | $0.39 – $0.44 |
| Grader | Grade | Price |
|---|---|---|
| PSA | 10 | $64.00 |
| PSA | 9 | $2.25 |
Condition spread
Damaged is the steepest discount off Near Mint, at 56% (-$0.18).
| Condition | Price | % of Near Mint | Difference |
|---|---|---|---|
| Damaged | $0.23 | 56% | -$0.18 |
| Heavily Played | $0.28 | 68% | -$0.13 |
| Lightly Played | $0.46 | 112% | +$0.05 |
| Moderately Played | $0.30 | 73% | -$0.11 |
Graded vs. raw
A PSA 10 sells for 156.1x raw Near Mint (+$63.59).
| Grader | Grade | Price | Multiple of raw | Difference |
|---|---|---|---|---|
| PSA | 10 | $64.00 | 156.1x | +$63.59 |
| PSA | 9 | $2.25 | 5.5x | +$1.84 |
Price history
| Date | Price |
|---|---|
| 2026-10-14 | $0.43 |
| 2026-10-15 | $0.43 |
| 2026-10-16 | $0.43 |
| 2026-10-18 | $0.41 |
| 2026-10-20 | $0.41 |
| 2026-10-21 | $0.40 |
| 2026-10-22 | $0.42 |
| 2026-10-23 | $0.42 |
| 2026-10-24 | $0.44 |
| 2026-10-25 | $0.39 |
| 2026-10-26 | $0.44 |
| 2026-10-27 | $0.39 |
| 2026-10-28 | $0.39 |
| 2026-10-29 | $0.39 |
| 2026-10-30 | $0.40 |
| 2026-10-31 | $0.42 |
Prices from TCG Price Lookup and JustTCG. Prices are aggregated estimates and are not guaranteed to be exact or current.
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