Professor's Research
Illustrated by Hideki Ishikawa · Sword & Shield series
Raw Market Value
$0.37
range $0.09 – $19.98
via TCGPlayer
Top graded value
$21.12
PSA 9
from real sold listings
32 recent sales tracked (180d).
Price History
Daily average sale price from eBay sold listings.
180d change
-$25.02 (-92.6%)
7D30D90D180D
Graded Prices
Verified prices across 2 grading services.
PSA
| Grade | Type | Low | Mid | High | Market |
|---|---|---|---|---|---|
| PSA 10 | normal | $8.50 | $8.50 | $8.50 | $8.50 |
| PSA 10 | reverseHolofoil | $10.50 | $10.50 | $10.50 | $10.50 |
| PSA 9 | normal | $20.00 | $20.50 | $22.00 | $21.12 |
| PSA 8 | holofoil | $6.50 | $9.00 | $11.50 | $11.47 |
| PSA 8 | normal | $4.00 | $7.00 | $13.00 | $8.06 |
CGC
| Grade | Type | Low | Mid | High | Market |
|---|---|---|---|---|---|
| CGC 9 | normal | $9.00 | $12.50 | $16.00 | $15.95 |
| CGC 9 | reverseHolofoil | $3.00 | $4.50 | $6.00 | $5.98 |
| CGC 8.5 | holofoil | $5.00 | $5.00 | $5.00 | $5.00 |
| CGC 8 | normal | $6.00 | $9.00 | $12.00 | $11.96 |
| CGC 7 | normal | $12.00 | $12.00 | $12.00 | $12.00 |
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Recent Sales onebay
Real sold listings, most recent first.
- Apr 10, 2026$1.99
- Mar 23, 2026$2.69
- Mar 5, 2026$7.77
- Mar 5, 2026$7.00
- Mar 5, 2026$4.66
- Mar 5, 2026$1.29
- Mar 3, 2026$2.25
- Feb 28, 2026$1.47
- Feb 27, 2026$2.00
- Feb 26, 2026$0.99
- Feb 23, 2026$2.25
- Feb 23, 2026$0.99
- Feb 23, 2026$0.14
- Feb 20, 2026$1.34
- Feb 19, 2026$6.51
- Feb 19, 2026$0.99
- Feb 15, 2026$0.99
- Feb 5, 2026$0.10
- Feb 1, 2026$1.30
- Feb 1, 2026$0.99
- Jan 17, 2026$1.25
- Jan 10, 2026$1.30
Final sold amounts in USD. Outbound links open the original eBay listing.
Other Professor's Research prints
Different printings across sets.
