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Tentacool

Undone Seal

Tentacool

Undone Seal·#20·Common·Pokemon
Market Value
$2.34
Tentacool
PSA 10
$12.87
+450%
PSA 9
--

Price history for 1M. 26 points, from $2.64 to $2.34. Down 11.4 percent.

$2.34-$0.30 (-11.4%)
Sep 17 '26Oct 12 '26
Last updated: Oct 12, 2026 4:17 AM
Grade 10 ValueACE 10 leads · $-3.33 estimated P&L
Likely not worth grading — fees and turnaround time usually outweigh the upside on low-value cards.
PSA 10
$12.87
$-14.46 P&L
$24.99 fee · ~95d
BGS 10
$13.51
$-6.78 P&L
$17.95 fee · ~75d
CGC 10
$10.94
$-8.40 P&L
$17 fee · ~150d
TAG 10
$11.58
$-12.76 P&L
$22 fee · ~45d
ACE 10
$9.01
$-3.33 P&L
$10 fee · ~25d
SGC 10
$10.30
$-7.04 P&L
$15 fee · ~75d
Population ReportLoading grading population…
Buy Signal61/100 · Buy
Fundamentals
Not enough data
Timing
50/100
Pricing
100/100
Gradeability
Not enough data
More Tentacool Cards48+Other versions of this character
Signal
Tentacool [1st Edition]

Tentacool [1st Edition]

Undone Seal · 20

Market
$1.16
PSA 10+5.9k%
$70.00
Tentacool [Reverse Holo]
+$14.02

Tentacool [Reverse Holo]

Legendary Collection · 96

Market
$99.44
PSA 10+404%
$501
Tentacool [Reverse Holo]
-$2.08

Tentacool [Reverse Holo]

Aquapolis · 113

Market
$26.63
PSA 10+398%
$133
Tentacool [Reverse Holo]
+$11.25

Tentacool [Reverse Holo]

Legend Maker · 66

Market
$23.36
PSA 10+2.2k%
$526
Tentacool [Reverse Holo]
+$4.88

Tentacool [Reverse Holo]

Hidden Legends · 77

Market
$12.89
PSA 10+3.2k%
$423
Tentacool [Reverse Holo]
+$0.37

Tentacool [Reverse Holo]

HS—Triumphant · 80

Market
$5.84
PSA 10+1.5k%
$94.03
Tentacool
+$2.77

Tentacool

Tidal Storm · 40

Market
$5.44
PSA 10+1.3k%
$75.74
Tentacool
-$1.01

Tentacool

Wind from the Sea · 28

Market
$5.03
PSA 10+2.8k%
$144
Tentacool [1st Edition]
-$0.16

Tentacool [1st Edition]

Tidal Storm · 41

Market
$4.15
PSA 10+1.5k%
$68.00
Tentacool

Tentacool

Alolan Moonlight · 8

Market
$4.00
PSA 10+450%
$22.00
Tentacool
+$0.12

Tentacool

Aquapolis · 113

Market
$3.75
PSA 10+2.0k%
$80.00
Tentacool
+$0.14

Tentacool

Clash at the Summit · 17

Market
$3.35
PSA 10+2.7k%
$95.00
Tentacool [Reverse Holo]
+$0.85

Tentacool [Reverse Holo]

Legends Awakened · 125

Market
$3.05
PSA 10+2.8k%
$87.41
Tentacool
+$0.27

Tentacool

Tidal Storm · 41

Market
$3.04
PSA 10+1.6k%
$52.47
Tentacool [1st Edition]

Tentacool [1st Edition]

Wind from the Sea · 28

Market
$2.99
PSA 10+5.2k%
$158
Tentacool

Tentacool

Mirage Forest · 20

Market
$2.47
PSA 10+1.9k%
$49.57
Tentacool [1st Edition]

Tentacool [1st Edition]

Tidal Storm · 40

Market
$2.39
PSA 10+1.7k%
$42.00
Tentacool

Tentacool

Mystery of the Fossils · 11

Market
$2.22
PSA 10+1.7k%
$41.00
Tentacool
-$0.19

Tentacool

Fossil [1st Edition] · 56

Market
$2.13
PSA 10+8.2k%
$178
Tentacool
+$0.34

Tentacool

Legendary Collection · 96

Market
$1.53
PSA 10+17.5k%
$270
Tentacool [1st Edition]
+$0.01

Tentacool [1st Edition]

Mirage Forest · 20

Market
$1.50
PSA 10+450%
$8.25
Tentacool
+$0.26

Tentacool

Fossil · 56

Market
$1.50
PSA 10+5.8k%
$88.43
Tentacool
+$0.69

Tentacool

Legends Awakened · 125

Market
$1.47
PSA 10+3.2k%
$48.42
Tentacool [Reverse Holo]
+$0.33

Tentacool [Reverse Holo]

Primal Clash · 70

Market
$1.27
PSA 10+1.1k%
$15.00
Tentacool [1st Edition]
-$2.73

Tentacool [1st Edition]

Clash at the Summit · 17

Market
$1.26
PSA 10+6.9k%
$87.83
Tentacool

Tentacool

Matchless Fighters · 11

Market
$1.25
PSA 10+450%
$6.88
Tentacool
-$0.24

Tentacool

HS—Triumphant · 80

Market
$1.16
PSA 10+3.7k%
$44.50
Tentacool
-$0.64

Tentacool

Hidden Legends · 77

Market
$0.77
PSA 10+7.7k%
$59.93
Tentacool
+$0.07

Tentacool

Legend Maker · 66

Market
$0.71
PSA 10+10.5k%
$75.00
Tentacool [Reverse Holo]
-$0.01

Tentacool [Reverse Holo]

Unbroken Bonds · 40

Market
$0.68
PSA 10+4.7k%
$32.56
Tentacool
-$0.27

Tentacool

Primal Clash · 70

Market
$0.50
PSA 10+6.9k%
$34.93
Tentacool

Tentacool

Tag Bolt · 45

Market
$0.50
PSA 10
--
Tentacool

Tentacool

Night Unison · 7

Market
$0.50
PSA 10
--
Tentacool [Reverse Holo]
-$0.30

Tentacool [Reverse Holo]

Team Up · 60

Market
$0.40
PSA 10+7.9k%
$31.93
Tentacool [Reverse Holo]
-$0.32

Tentacool [Reverse Holo]

Guardians Rising · 23

Market
$0.40
PSA 10+8.2k%
$33.37
Tentacool [Reverse Holo]
-$0.36

Tentacool [Reverse Holo]

151 · 72

Market
$0.33
PSA 10+11.9k%
$39.46
Tentacool
-$0.18

Tentacool

151 · 72

Market
$0.26
PSA 10+11.8k%
$30.97
Tentacool
-$0.38

Tentacool

Team Up · 60

Market
$0.25
PSA 10+9.2k%
$23.26
Tentacool
-$0.24

Tentacool

Guardians Rising · 23

Market
$0.25
PSA 10+14.4k%
$36.18
Tentacool
-$0.25

Tentacool

Evolving Skies · 26

Market
$0.15
PSA 10+20.3k%
$30.58
Tentacool
-$0.31

Tentacool

Unbroken Bonds · 40

Market
$0.04
PSA 10+77.8k%
$31.18
Tentacool

Tentacool

Cry from the Mysterious · 21

Market
$0.00
PSA 10
--
Misty's Tentacool [1st Edition]
-$0.54

Misty's Tentacool [1st Edition]

Gym Heroes [1st Edition] · 32

Market
$14.74
PSA 10+815%
$135
Misty's Tentacool [1st Edition]
+$1.76

Misty's Tentacool [1st Edition]

Gym Heroes [1st Edition] · 57

Market
$13.62
PSA 10+3.2k%
$450
Misty's Tentacool
-$0.49

Misty's Tentacool

Gym Heroes · 32

Market
$11.00
PSA 10+789%
$97.75
Tentacool [Reverse Holo]
+$0.16

Tentacool [Reverse Holo]

Primal Clash · 71

Market
$10.00
PSA 10+820%
$92.00
Tentacool
+$0.76

Tentacool

Primal Clash · 71

Market
$3.02
PSA 10+1.7k%
$54.86
Misty's Tentacool

Misty's Tentacool

Leaders' Stadium · 30

Market
$2.63
PSA 10+5.2k%
$139