Sword & ShieldSword & Shield · 2020Professor's Research Secret
TCGPlayer market
$4.17
- Cardmarket
- €5.58
- PSA 10
- $32.69
- PSA 9
- $19.78
- PSA population
- 709
Finish
Market prices
Ungraded prices from each marketplace we track, with sales activity where available.
TCGPlayer Market USD
$4.17
TCGPlayer Market
USD
—
eBay Average USD
$3.87
eBay Average
USD
Jun 4, 2026
eBay Sold USD
$4.95
eBay Sold
USD
—
Cardmarket EUR
€5.58
Cardmarket
EUR
—
Graded prices
Average sold price by grading company and grade.
- Grade 10
- $32.699 sold▲
- Grade 9
- $19.781 sold
- Grade 8
- $7.081 sold
| Grader | 10 | 9 | 8 |
|---|---|---|---|
| PSA | $32.699 sold▲ | $19.781 sold | $7.081 sold |
| CGC | – | $1.00 | – |
Population report
How many copies each grading company has graded, and at which grade.
PSA graded
709
Gem rate
Price by condition
Ungraded market price for each printing, from Near Mint down to Damaged.
Holofoil
NM
Near Mint
$4.15
LP
Lightly Played
$3.35
MP
Moderately Played
$4.21
HP
Heavily Played
$3.00
DM
Damaged
$2.00
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About Professor's Research Secret
Professor's Research Secret is a Pokémon card (#209) from Sword & Shield, part of the Sword & Shield series, released in 2020.
An ungraded copy currently sells for about $4.17. A PSA 10 (Gem Mint) averages $32.69 — about 7.8× the raw price.
PSA has graded 709 copies, 433 of them at PSA 10 (a 61.1% gem rate). Fewer tens usually means a larger premium for a top-graded copy.
PokiFrame tracks Professor's Research Secret across TCGPlayer, Cardmarket and eBay sales so you can check its value before you buy, sell or trade.
Professor's Research Secret — common questions
- How much is Professor's Research Secret worth?
- Professor's Research Secret from Sword & Shield has a market price of $4.17 for an ungraded copy, based on current TCGPlayer and eBay sales data. Condition, print variant and grading all move that number.
- What is a PSA 10 Professor's Research Secret worth?
- Recent PSA 10 (Gem Mint) sales of Professor's Research Secret averaged $32.69, about 7.8× the ungraded price. A PSA 9 averaged $19.78.
- How many PSA 10 Professor's Research Secret are there?
- PSA has graded 709 copies of Professor's Research Secret, and 433 of them received a PSA 10 — a gem rate of 61.1%.
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