What's your copy worth?
What this price is based on
Low confidenceOnly 0 sales in the last 90 days.
Recent CGC 10 sales
By grade
- CGC 10$36.002 sales
- PSA 9$39.601 sale
- PSA 10$2501 sale
- Lot$7.001 sale
From 5 completed sales recorded between Apr 6, 2026 and Jul 12, 2026. Sold prices only — asking prices are never counted.
Grade it or not
NOT WORTH ITBased on 4 graded sales and 1,889,841 pop-report entries for a near-mint copy.
See the numbers — Trader plan and aboveBuy this card
✨ Is it worth it?
An AI market read of this card — value, momentum, grading economics, liquidity. It lays out the data; you decide.
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 $12.79 ungraded, with a PSA 10 worth around $45 — a gem-mint grading premium of roughly 4× the raw value. Prices are aggregated across marketplaces — raw and graded, updated daily and shown in your local currency.
Prices last updated 20 August 2026.
The receipts
Price history · Raw
We'll email you when this card's value crosses your target.
Verified sales history10 in 90 days✓ real completed listings
| Date | Grade | Price | Cert |
|---|---|---|---|
| 7 Aug 2026 | PSA 9 | $21.00 | #147896871 ✓ |
| 6 Aug 2026 | PSA 8 | $22.00 | #132337405 ✓ |
| 24 Jun 2026 | PSA 9 | $31.00 | #147896871 ✓ |
| 5 May 2026 | PSA 9 | $19.02 | #62795844 ✓ |
| 4 May 2026 | PSA 8 | $15.50 | #98205958 ✓ |
| 28 Apr 2026 | PSA 9 | $22.08 | #84773184 ✓ |
| 24 Feb 2026 | PSA 8 | $10.00 | #69149528 ✓ |
| 13 Nov 2025 | PSA 5 | $14.00 | #124258391 ✓ |
| 15 Sep 2025 | PSA 8 | $14.99 | #61493154 ✓ |
| 15 Aug 2025 | PSA 8 | $10.00 | #118435181 ✓ |
Should you grade it?
Expected return across every likely grade, after fees — the realistic average, not the best case. Only 25.7% of copies gem (PSA 10 best case −$38); most land at PSA 9 or below.
The odds
Koga's Arbok is a Rare in Gym Challenge — the pack's hit slot lands on Rare 67% of the time, split across 21 rare cards in the set, so pulling this exact card is roughly 1 in 31 packs.
Estimates only. Pack odds come from CardTrack's pack model (the same one behind the pack simulator) — not an official rate. Grading odds are the real cumulative PSA population, which skews toward nicer, resubmitted copies, so it overstates the true first-submission gem rate. Full grade-by-grade breakdown below.
Grade-by-grade ROI & risk-adjusted outcomesNet vs raw per target grade, plus the probability-weighted distribution
| Target grade | Est. value | Grading fee | Net vs raw | Multiple |
|---|---|---|---|---|
| PSA 10 | $45.46 | $70 | −$38 | 3.6× |
| PSA 9 | $21.03 | $70 | −$62 | 1.6× |
| PSA 8 | $15.13 | $70 | −$68 | 1.2× |
⚖️ Risk-adjusted return
Best case isn't the whole story. Weighting every grade by how often it actually happens, across 101 PSA-graded copies:
| Likely outcome | Chance | Value |
|---|---|---|
| PSA 10 | 25.7% | $45.00 |
| PSA 9 | 40.6% | $21.00 |
| PSA ≤8 | 33.7% | $13.00 |
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.
Population across gradersPSA, CGC & BGS — every grade, with gem rates
Only 26% of 101 PSA-graded Koga's Arbok copies are a gem-mint 10 (26 of 101) — the rest grade lower.
Real graded population from PSA, CGC & BGS — a lower gem rate means a Koga's Arbok 10 is harder to pull.
Copies for sale right now
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All grades & conditions
Every grade we pricePSA / CGC / BGS ladder with per-grade population
| Grade | Relative value | Price |
|---|---|---|
| PSA 10pop 26 | $45$39–$52 | |
| PSA 9pop 41 | $21$18–$24 | |
| PSA 8pop 23 | $15$13–$17 | |
| PSA 7pop 6 | $7$6–$7 |
Raw condition ladderNM → damaged, with real sold medians where we have them
Price by printingBase vs reverse holo vs 1st edition — priced separately
Price by variant
TCGplayer market price per printing — reverse holo, 1st edition and unlimited often differ sharply.
Market dataCross-market spread, EU price, momentum & community buzz
Cross-market prices
163% spreadCurrently 163% cheaper on PriceCharting than Cardmarket. 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.
🇪🇺 Cardmarket price · Europe
Card textAttacks, abilities, weakness / resistance / retreat
Evolves from Koga's Ekans.
Koga's Arbok is now Poisoned.
If Koga's Arbok is Poisoned, this attack's base damage is 40 instead of 20 and the Defending Pokémon is now Poisoned.
Card detailsSet, rarity, artist, Pokédex & specs
More from Gym Challenge
Frequently asked questions
How much is Koga's Arbok (Gym Challenge #25) worth?
As of 20 August 2026, Koga's Arbok from Gym Challenge is worth approximately $12.79 ungraded (near-mint), and around $45 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 $45 — roughly 4× the raw ungraded value of $12.79.
Should I grade my Koga's Arbok?
A PSA 10 sells for about $45 versus $12.79 raw — roughly a 4× 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 $12.79 ungraded.
Cite & embed this card
Free to use with attribution to CardTrack.
Koga's Arbok (Gym Challenge #25) — Pokémon market value $12.79, PSA 10 $45.46. Source: CardTrack, https://cardtrack.com/pokemon/card/gym-challenge/koga-s-arbok-25<iframe src="https://cardtrack.com/embed/card?id=gym2-25" width="100%" height="160" style="border:0;max-width:460px" title="Koga's Arbok price — CardTrack" loading="lazy"></iframe>
<p style="font:12px system-ui">Source: <a href="https://cardtrack.com">CardTrack</a></p>