Professor's Research

Skeledirge ex Terastal Starter Set · #18/20 · None · 2023JPN

$0.99
Market price ▲ 4.2% (1Y)
Prices as of Jul 26, 2026
4graded pop
100%gem rate
-54%off ATH $28.87 · Sep 2025

Price history

Normal▲ 1.0% 7d$0.99
Low $0.98Mid $0.99High $1.00

Loading chart…

Buy it now on eBay

Loading live listings…

Live from eBay · affiliate links support CardPrice · see recent sold results →

Shop live eBay listings →Recent eBay sold results

Graded values

updated 2026-07-26
Grade 6 est.$12.65
Grade 5 est.$10.66
Grade 4 est.$8.79
Grade 3 est.$7.33
Grade 2 est.$5.99
Grade 1 est.$5.06

Grades 1–6 are estimates modeled from the raw price — PSA/CGC/BGS 7–10 and Ungraded are live tracked market values.

Ungraded price history$13.32

Ungraded chart is building — graded values are tracked nightly, a new point appears each day.

Graded population census · updated 2026-07-10

PSA4 graded · 4 gem 10

Population data from PriceCharting, updated monthly.

How much is Professor's Research #18/20 worth?

Right now (July 27, 2026) the going rate for an ungraded Professor's Research #18/20 from Skeledirge ex Terastal Starter Set is about $0.99.

Prices on this page refresh nightly from live TCGplayer market data and are cross-checked against actual sold prices, so a single inflated listing never becomes "the price". The chart above has the full history.

Other printings of Professor's Research 16

Professor's Research #85 Black Bolt
Professor's Research
Black Bolt · #85/86
Professor's Research #84 Black Bolt (Japanese)
Professor's Research
Black Bolt (Japanese) · #84/86
Professor's Research #84 Black Bolt (Japanese)
Professor's Research
Black Bolt (Japanese) · #84/86
Professor's Research #155 Journey Together
Professor's Research
Journey Together · #155/159
Professor's Research #17 ex Starter Set Marnie's Morpeko & Grimmsnarl ex (Japanese)
Professor's Research
ex Starter Set Marnie's Morpeko & Grimmsnarl ex (Japanese) · #17/19
Professor's Research #16 ex Starter Set Steven's Beldum & Metagross ex (Japanese)
Professor's Research
ex Starter Set Steven's Beldum & Metagross ex (Japanese) · #16/18
Professor's Research #35 Battle Partners Deck Build Box (Japanese)
Professor's Research
Battle Partners Deck Build Box (Japanese) · #35/45
Professor's Research #122 Prismatic Evolutions
Professor's Research
Prismatic Evolutions · #122/131
Professor's Research #123 Prismatic Evolutions
Professor's Research
Prismatic Evolutions · #123/131
Professor's Research #124 Prismatic Evolutions
Professor's Research
Prismatic Evolutions · #124/131
Professor's Research #125 Prismatic Evolutions
Professor's Research
Prismatic Evolutions · #125/131
Professor's Research #162 Generations Start Decks (Japanese)
Professor's Research
Generations Start Decks (Japanese) · #162/175
Professor's Research #163 Generations Start Decks (Japanese)
Professor's Research
Generations Start Decks (Japanese) · #163/175
Professor's Research #164 Generations Start Decks (Japanese)
Professor's Research
Generations Start Decks (Japanese) · #164/175
Professor's Research #165 Generations Start Decks (Japanese)
Professor's Research
Generations Start Decks (Japanese) · #165/175
Professor's Research #166 Generations Start Decks (Japanese)
Professor's Research
Generations Start Decks (Japanese) · #166/175