Pokémon TCG · Undone Seal · Japanese · #21
Tentacruel #21 (Japanese) price
Undone Seal21Market prices
90-day range · Cardmarket
Tentacruel (#21, Rare) is a card from the Japanese Pokémon set Undone Seal. Near Mint, it has a market price of about $3.00 on TCGplayer and €4.79 on Cardmarket (updated November 11, 2026). Over the last 7 days, its Cardmarket price trend rose 3.5%. Over the last 30 days, its Cardmarket price trend rose 5.0%. Over the last 90 days, its Cardmarket price trend fell 6.8%. Its 90-day Cardmarket price trend range is €4.56 to €5.14. Among the 18 Rare cards of Undone Seal, it is the 16th most valuable. Converted to dollars, its Cardmarket price is 76.9% higher than its TCGplayer price.
Tentacruel #21 prices by finish
| Finish | TCGplayer | Cardmarket |
|---|---|---|
| Unlimited Holo | $3.00 | €4.79 |
Near Mint prices: TCGplayer market price, Cardmarket price trend, updated November 11, 2026.
Price changes by finish
| Finish | Price | 7 days | 30 days | 90 days | 90-day range |
|---|---|---|---|---|---|
| Unlimited Holo | Cardmarket price trend | +3.5% | +5.0% | −6.8% | €4.56 – €5.14 |
Change of the same Near Mint price (same market, same finish) against 7, 30 and 90 days ago; range: its lowest and highest daily value over the last 90 days. Only where the price history supports a figure; lowest listings have none.
Price charts, graded prices from PSA, CGC, BGS, SGC, TAG and ACE, PSA population counts and recent sold listings are in Sparkl Pro.
About this card
- Number
- 21
- Rarity
- Rare
- Finishes
- Unlimited Holo
- Rank in its rarity
- 16th of 18 Rare cards
- Against its rarity’s median
- 0.5× the median ($5.86)
- Cardmarket vs TCGplayer
- +76.9% after conversion ($1.1081 per euro)
- Released
- January 16, 2004
- Print language
- Japanese
How this page is made: Near Mint prices from TCGplayer and Cardmarket, refreshed daily; ranks, medians and comparisons are computed by Sparkl from those prices.
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