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Professor Cozmo's Discovery
How much is Professor Cozmo's Discovery 90/107 (Deoxys) worth?
Professor Cozmo's Discovery 90/107 (French La découverte du Professeur Kosmo, Deoxys · DX, normal, language per Cardmarket listing, 2005) is worth €0.35 on 13 October 2026 (Cardmarket trend).
Cardmarket 30-day average: €0.48; lowest listing: €0.02. In the US, TCGplayer lists it at $0.57.
Trend of the Cardmarket listing across all conditions and editions of this print, excluding reverse holo; graded copies trade separately.
Has Professor Cozmo's Discovery 90/107 gone up in value?
Professor Cozmo's Discovery 90/107 (French La découverte du Professeur Kosmo, Deoxys · DX, normal, language per Cardmarket listing, 2005) is priced at €0.35 on 13 October 2026: +34.6% since 30 December 2024 (€0.26) and −32.7% since 13 September 2026 (€0.52), based on the Cardmarket trend.
| Date | € | Change to latest quote |
|---|---|---|
| 13 October 2026 | €0.35 | +0.0% |
| 13 September 2026 | €0.52 | −32.7% |
| 17 June 2026 | €0.34 | +2.9% |
| 30 December 2024 | €0.26 | +34.6% |
| 9 September 2026 (series high) | €0.60 | −41.7% |
Change in the Cardmarket trend, not actual sales; the history has gaps with no readings between some dates.
- 7-day change
- +64.9%
- Cardmarket trend
- 30-day change
- +29.8%
- Cardmarket trend
- Average sale
- €0.40
- Cardmarket sales
- Lowest listing
- €0.02
- Cardmarket listings
Price analytics · Normal
- Trend price
- €0.35
- Average sold price
- €0.40
- 1-day average
- €0.16
- 7-day average
- €0.54
- 30-day average
- €0.48
- Lowest listed
- €0.02
Reverse holo · Cardmarket
- Trend price
- €2.97
- Average sold price
- €6.90
- 7-day average
- €3.59
- 30-day average
- €3.58
- Lowest listed
- €0.60
US market · TCGplayer ($)
- Normal
- Low $0.12 · High $19.80$0.57
- Reverse holo
- Low $5.00 · High $69.82$16.82
Where to buy
Links open the sellers’ own sites. Pepita earns no commission from them.
You can play only one Supporter card each turn. When you play this card, put it next to your Active Pokémon. When your turn ends, discard this card. Flip a coin. If heads, draw the bottom 3 cards of your deck. If tails, draw the top 2 cards of your deck.
- Rarity
- Uncommon
- Illustrator
- Ken Sugimori
- Set
- Deoxys
- Variants
- Normal, Reverse holo
