Undone Seal
#20 · 2004 · 83 cards
Market Price · Near Mint · Updated August 10, 2026
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Prices updated Aug 10, 2026
Recent market data · NM
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Live listings · Sorted by price
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HP
50
Type
Pokémon
Stage
Basic
Evolves from
[]
Ability
Freefloating
If Tentacool has no Energy attached to it, Tentacool's Retreat Cost is 0.
Attack
Wrap
Flip a coin. If heads, the Defending Pokémon is now Paralyzed.
Weakness
Retreat Cost
Illustrated by
Hisao Nakamura
Pokédex
#72
A PSA 10 (Gem Mint) copy of Tentacool #20 sells for $70.00.
Ungraded + PSA / CGC / BGS grades
| Condition | Market | eBay |
|---|---|---|
| Near MintMost common | — | $3.54 |
| Lightly Played | — | — |
| Moderately Played | — | — |
| Heavily Played | — | — |
| Damaged | — | — |
Graded Prices
| Grade | PSA | CGC | BGS |
|---|---|---|---|
| ★ 10 | $70.00 | — | — |
| 9 | — | $0.99 | — |
Live market prices · ~ estimated using standard condition discounts
Tentacool
151
+13.3%14d
Tentacool
Alolan Moonlight
0.0%14d
Tentacool
Aquapolis
+3.4%14d
Tentacool
Clash at the Summit
0.0%14d
Tentacool
Cry from the Mysterious
Tentacool
Evolving Skies
+22.2%14d
Tentacool
Fossil
+5.5%14d
Tentacool
Guardians Rising
0.0%14d
Tentacool
Hidden Legends
0.0%14d
Tentacool
HS—Triumphant
-2.8%14d
Tap a grade to see its price history
| Condition | Market | eBay Sold |
|---|---|---|
Near Mint | — | $3.54 |
Lightly Played | — | — |
Moderately Played | — | — |
Heavily Played | — | — |
Damaged | — | — |
~ estimated from NM using standard condition discounts · updated when marketplace data is available
