Not scraped yet · Prices for this card are updated when someone looks it up.
Price history
| Grade | Fair value |
|---|---|
| PSA 10 | €57.12 |
| PSA 9 | €1.92 |
Not enough sales yet to chart a history for English · PSA.
A US monthly price published by PriceCharting and converted to euros. It is not an EverySlab fair value. PriceCharting
Live offers
0 of 0 Cardmarket offers
0 live offers
Recent sales
Completed sales on eBay, Fanatics and Goldin
| Oct 22, 2026 | Raw | en | professor willow | Professor's Research [Professor Willow] - SWSH178 #SWSH178 Near Mint English [TCGPlayer] | €0.37 |
| Oct 22, 2026 | PSA10 | en | eBay | 2021 Pokemon Go V Battle Decks Professor's Research Holo #SWSH178 PSA 10 [eBay] | €57.12 |
| Oct 21, 2026 | Raw | en | professor willow | Professor's Research [Professor Willow] - SWSH178 #SWSH178 Near Mint English [TCGPlayer] | €0.41 |
| Oct 20, 2026 | Raw | en | professor willow | Professor's Research [Professor Willow] - SWSH178 #SWSH178 Near Mint English [TCGPlayer] | €0.05 |
| Oct 20, 2026 | Raw | en | eBay | Professor's Research SWSH178 Pokémon GO Black Star Promo Holo Pokémon 2022 NM #SWSH178 [eBay] | €2.01 |
| Oct 17, 2026 | Raw | en | professor willow | Professor's Research [Professor Willow] - SWSH178 #SWSH178 Near Mint English [TCGPlayer] | €0.04 |
| Oct 13, 2026 | Raw | en | professor willow | Professor's Research [Professor Willow] - SWSH178 #SWSH178 Near Mint English [TCGPlayer] | €0.44 |
| Oct 12, 2026 | Raw | en | professor willow | Professor's Research [Professor Willow] - SWSH178 #SWSH178 Near Mint English [TCGPlayer] | €0.47 |
| Oct 10, 2026 | Raw | en | eBay | Professor's Research SWSH178 Holo Sword & Shield Promo Pokemon Go NM #SWSH178 [eBay] | €1.56 |
| Oct 8, 2026 | Raw | en | eBay | Professor's Research SWSH178 Holo Promo Sword & Shield Promo Pokemon MP #SWSH178 [eBay] | €3.40 |
| Oct 7, 2026 | Raw | en | eBay | Professor's Research SWSH178 Promo Pokemon Card NM #SWSH178 [eBay] | €3.11 |
| Oct 7, 2026 | Raw | en | eBay | PROFESSOR'S RESEARCH SWSH178 HOLO SWORD & SHIELD PROMO POKEMON NM #SWSH178 [eBay] | €1.33 |
| Oct 6, 2026 | Raw | en | professor willow | Professor's Research [Professor Willow] - SWSH178 #SWSH178 Near Mint English [TCGPlayer] | €0.30 |
| Oct 5, 2026 | Raw | en | professor willow | Professor's Research [Professor Willow] - SWSH178 #SWSH178 Near Mint English [TCGPlayer] | €0.43 |
| Oct 4, 2026 | Raw | en | professor willow | Professor's Research [Professor Willow] - SWSH178 #SWSH178 Near Mint English [TCGPlayer] | €0.42 |
Rows per page
PSA population trend
enHow many copies PSA has graded and how many came back a 10.
No PSA population data for this card yet.
Card details
- Set
- SWSH Black Star Promos
- Number
- SWSH178/307
- Rarity
- Promo
- Illustrator
- Yusuke Kozaki
| Grade | Condition | Language | Sales 12m | Median | Last sale | Fair value | Change | Offers | Lowest ask |
|---|---|---|---|---|---|---|---|---|---|
| PSA10 | – | en | 1 | €57.12 | Oct 22, 2026 | €57.12 | – | – | – |
| PSA9 | – | en | 1 | €1.92 | Apr 29, 2026 | €3.611 sale + estimate from PSA 10 (1 PSA 10 sale) | – | – | – |
| Raw | – | en | 60 | €0.81 | Oct 22, 2026 | – | – | – | – |
Questions about Professor's Research
How much is a PSA 10 Professor's Research worth?
A PSA 10 English Professor's Research (SWSH Black Star Promos SWSH178/307) is worth about €57.12 (≈ $63.69), based on 1 sale in the last 12 months; most sales fall between €42.32 and €77.10. A PSA 9 English Professor's Research (SWSH Black Star Promos SWSH178/307) is worth about €3.61 (≈ $4.03), based on 1 sale in the last 12 months, blended with an estimate from PSA 10 (1 PSA 10 sale); most sales fall between €2.67 and €4.87.
How is the Professor's Research value calculated?
EverySlab recomputes the Professor's Research fair values every day, most recently on Oct 28, 2026. Each grade and language gets a median of completed sales from the last 12 months on eBay, Fanatics Collect and Goldin, with older sales adjusted to today's market and recent sales counting more; thinly traded grades are estimated from related grades and languages. How fair value works
How fast does a PSA 10 Professor's Research sell?
None sold on EU venues in the last 90 days (1 copy on all venues), so there is no EU pace to time a sale from. Listed at €57.12, one copy nets about €46.62 on Cardmarket after fees.
Fair values updated Oct 28, 2026 · completed sales from eBay, Fanatics Collect and Goldin · live asks from Cardmarket · How fair value works
USD converted at the ECB rate of Oct 27, 2026.
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