Koga's Arbok Gym Challenge #25
Sold prices, not asking · Updated 5 July 2026
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Koga's Arbok is a Rare Pokémon card from Gym Challenge (#25), illustrated by Ken Sugimori. It's a Stage 1 Grass-type Pokémon with 90 HP, evolving from Koga's Ekans, weak to Psychic ×2. Its current blended market value is $17.04 ungraded, with a PSA 10 worth around $144 — a gem-mint grading premium of roughly 8× the raw value. Prices are aggregated across marketplaces — raw and graded, updated daily and shown in your local currency.
Prices last updated 5 July 2026.
| Grade | Relative value | Price |
|---|---|---|
| PSA 10pop 127 | $144$131–$200 | |
| PSA 9pop 170 | $39$27–$50 | |
| PSA 7pop 13 | $10$7–$10 |
Price history · Raw
Recent sold prices
No recent sold listings tracked.
Population across graders
Only 34% of 371 PSA-graded Koga's Arbok copies are a gem-mint 10 (127 of 371) — the rest grade lower.
Full grade breakdown (7 grades)
Full grade breakdown (5 grades)
Should you grade it?
Only 34.2% of copies gem (PSA 10 best case +$55); most land at PSA 9 or below.
| Target grade | Est. value | Grading fee | Net vs raw | Multiple |
|---|---|---|---|---|
| PSA 10 | $143.88 | $71.43 | +$55 | 8.4× |
| PSA 9 | $39.43 | $70.38 | −$48 | 2.3× |
⚖️ Risk-adjusted return
Best case isn't the whole story. Weighting every grade by how often it actually happens, across 371 PSA-graded copies:
| Likely outcome | Chance | Value |
|---|---|---|
| PSA 10 | 34.2% | $144.00 |
| PSA 9 | 45.8% | $39.00 |
| PSA ≤8 | 19.9% | $17.00 |
Net = graded value − raw value − grading cost (tier fee + ~$20 round-trip shipping), using PSA fees as of 2026-06-28; the paused PSA Value tier is excluded so this isn't overstated. Gem rate is estimated from cumulative PSA population, which skews toward nicer, resubmitted copies — so it overstates the true grade rate. Treat it as a guide, not a guarantee.
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Where to buy
Market dataCross-market spread, EU price, momentum & community buzz
Cross-market prices
3% spreadCurrently 3% cheaper on PriceCharting than TCGplayer. These are independent market prices for the same card — a wide gap can mean a buying opportunity. Informational only, not arbitrage advice.
Market signal
Derived from this card's 90-day price history, recent trend and cross-market price gap. Informational, not advice.
Card text
Evolves from Koga's Ekans.
Card details
More from Gym Challenge
Frequently asked questions
How much is Koga's Arbok (Gym Challenge #25) worth?
As of 5 July 2026, Koga's Arbok from Gym Challenge is worth approximately $17.04 ungraded (near-mint), and around $144 in PSA 10 gem mint. Values are blended from real Cardmarket, eBay sold and TCGplayer prices and update daily.
What is the PSA 10 price for Koga's Arbok?
A PSA 10 (gem mint) Koga's Arbok from Gym Challenge is worth around $144 — roughly 8× the raw ungraded value of $17.04.
Should I grade my Koga's Arbok?
A PSA 10 sells for about $144 versus $17.04 raw — roughly a 8× uplift. Grading is worth it when that premium comfortably beats the grading fee and the card is clean enough to have a real shot at a 10. See the "Should you grade it?" estimate above for net profit per grade.
Is Koga's Arbok rare?
Koga's Arbok is a Rare card from Gym Challenge (card #25), illustrated by Ken Sugimori. Its current blended market value is $17.04 ungraded.