Unown I #37
Unown I is card #37 from Mysterious Treasures, a Rare Pokémon card currently trading near $10.38 for its Reverse Holofoil printing.
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By CardLedger Research · Market data updated · Prices from TCGplayer & Cardmarket
Net estimates use each marketplace's default seller tier and typical shipping — fees vary by category, account status and payment method, so confirm current rates before selling.
There isn't enough recent sold history to call direction on Unown I #37. Sell on your own schedule.
Unown I at a glance
- Rarity tier — Rare.
- No published price history.
- Cardmarket does not list a price.
- Set: Mysterious Treasures (Diamond & Pearl, 2007).
- Live market value $10.38 for the Reverse Holofoil print.
Unown I price by printing
Live TCGplayer and Cardmarket values for Unown I #37.
TCGplayer prices, updated 2026/10/26.
- Low
- $4.54
- Mid
- $45.17
- High
- —
- Low
- $1.00
- Mid
- $2.48
- High
- —
Verify the card image and live listings on TCGplayer, Cardmarket or eBay.
Is this Unown I a good deal?
Put any asking price against today's live market value for Unown I #37.
Enter what a seller is asking for Unown I #37. We compare it to today's live market value.
About Unown I #37
Unown I is the #37 of 123 card in Mysterious Treasures, a classic-era set released in 2007 as part of the Diamond & Pearl series. It is a Psychic-type Pokémon with 50 HP, printed as Basic.
Daisuke Ito illustrated this card. Its Reverse Holofoil printing is priced near $10.38, with listings from $4.54 to —.
“Shaped like ancient writing, it is a huge mystery whether language or UNOWN came first.”
Printed flavour text on the Mysterious Treasures #37 card.
Card facts
- Set
- Mysterious Treasures
- Series
- Diamond & Pearl
- Number
- #37 / 123
- Rarity
- Rare
- Illustrator
- Daisuke Ito
- HP
- 50
- Type
- Psychic
- Subtype
- Basic
- Pokédex
- #201
- Released
- 2007/08/01
Unown I attacks, abilities & battle stats
Printed card text and battle statistics for Unown I #37 — the playability layer behind the price.
ITEM
Once during your turn (before your attack), if you have Unown I, Unown T, Unown E, and Unown M on your Bench, you may search your deck for a Trainer card, show it to your opponent, and put it into your hand. Shuffle your deck afterward. You can't use more than 1 ITEM Poké-Power each turn.
Hidden Power
Choose an Energy card attached to the Defending Pokémon and put it face down. Treat that card as a Special Energy card that provides Colorless Energy and doesn't have any effect other than providing Energy. Put that card face up at the end of your opponent's next turn.
Battle stats
- Weakness
- Psychic +10
- Retreat cost
- —
- Ability
- ITEM
- Attacks
- 1
Unown I price analysis
What drives the current market value of Unown I #37.
There are 2 tracked printings here — Reverse Holofoil at $10.38, Normal at $2.60.
In the $10.38 band, condition and variant selection create meaningful price differences.
In the $10.38 band, condition and variant selection create meaningful price differences.
Cardmarket does not list Unown I, so TCGplayer and eBay are the reference markets.
Unown I price history & movement
Cardmarket does not publish recent price history for this card, so use sold listings on eBay and TCGplayer to gauge short-term movement.
Across 5 recorded days the price spanned $10.38–$10.38. The most recent snapshot of $10.38 sits 100% up that range.
Recorded volatility runs near 0% per day, with a maximum drawdown of 0% over the tracked window.
Cardmarket averages
Price fingerprint
Built from CardLedger's own daily snapshots · 5 days tracked · latest
Real recorded values from our daily TCGplayer snapshots — not estimates or back-filled history. Methodology
How much would you net selling Unown I?
Model the real take-home on a [object Object] sale across eBay, TCGplayer, Cardmarket and direct — fees and shipping included.
Selling Unown I at $10.38 nets roughly $8.70 on eBay, $8.76 on TCGplayer, $9.51 via Cardmarket, $8.95 on Whatnot or $10.38 direct — the platform you pick is worth up to $1.68.
With this much value in the fee gap, platform choice materially changes your return. Model your exact shipping in the tool below.
Your sale
Pre-filled with the current TCGplayer market for Unown I #37.
Modelled on each marketplace's default seller tier with your shipping input. Net payout = sale price − selling fees − outbound shipping. Fee figures are estimates (last reviewed October 15, 2026) and vary by category, account status and payment method — confirm current rates with the marketplace. Open the full seller fee calculator to model account tiers and buyer-paid shipping.
Should you grade Unown I?
Model the break-even and PSA 9 vs PSA 10 profit on grading Unown I #37 against today's raw market value.
Grading plan
Pre-filled with the live market value for Unown I #37.
Both-way postage plus declared-value insurance.
Estimated graded values below are a transparent starting point based on the raw price band — edit them with real graded comps before deciding.
At $10.38 raw and $40.00 all-in grading cost, a PSA 10 nets — versus selling raw, a PSA 9 nets —. You need a graded sale of $56.36 to break even on grading.
At your stated grade odds the expected profit is — (-50.8% return on cost basis).
Grading costs, turnaround and grade outcomes vary by service and card. The estimated PSA 9 and PSA 10 values are heuristics, not predictions — always sanity-check against recent graded sold listings before committing. This is a modelling tool, not financial advice.
Unown I within Mysterious Treasures
By market value Unown I sits at #37 of 69 in Mysterious Treasures (set median $10.78).
That is 4% below the middle of the set — a top-48% position.
The set's top card is Lucario (#122), valued at $216.04.
What makes Unown I valuable
- Daisuke Ito illustrated this card, which adds appeal for artist-focused collectors.
- Unown I is a Psychic card with 50 HP, so demand comes from both collectors and players.
- Rare is a common-to-mid rarity, so value depends more on condition, variant and playability than on scarcity alone.
- steady supply at this price keeps the card accessible to new collectors.
- Classic-era (2007) cards have a dedicated collector base and no prospect of new supply.
Buying & selling Unown I
- For Unown I, confirm the exact print variant before buying: Reverse Holofoil, Normal prices differ, and listings often mix them.
- If you are buying to resell, model marketplace fees first — the $10.38 value is pre-fee, and the seller-fee calculator shows the net take-home per platform.
- Check sold listings rather than asking prices — the Reverse Holofoil market of $10.38 reflects actual transactions on TCGplayer.
- Because it is a Pokémon card, Unown I has both collector and player demand — a broader buyer pool than purely collectible cards.
- Bulk lots of Unown I can hide condition issues; inspect edges and holo surfaces before paying near the — high.
Unown I value questions
How much is Unown I worth?
Unown I trades near $10.38 on TCGplayer (Reverse Holofoil), ranging $4.54–—; Cardmarket shows —.
Is Unown I a good investment?
As a classic-era Rare card it is holding steady in the short term. Finite supply supports long-term value.
Is Unown I rare?
Unown I is a Rare card from Mysterious Treasures (Diamond & Pearl series, 2007). It sits in a common-to-mid rarity tier, so condition and variant matter more than raw scarcity.
What print variants exist for Unown I?
TCGplayer tracks 2 printings: Reverse Holofoil ($10.38), Normal ($2.60). Prices differ between variants, so always confirm which one you own or are buying.
Where is Unown I sold?
The main marketplaces are TCGplayer (USD), Cardmarket (EUR) and eBay. Current TCGplayer market is $10.38. When selling, compare net proceeds after fees — eBay and TCGplayer typically charge 9–13%, while direct sales carry lower or no fees.
What drives Unown I's value?
Four factors dominate: the Rare rarity tier, the classic-era Diamond & Pearl set pedigree, playability (Pokémon, Psychic), and condition. Artwork by Daisuke Ito also matters to collector demand.
More ways to browse Unown I
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