![Koga's Ekans [1st Edition] #77 Pokémon card from Gym Challenge](https://storage.googleapis.com/images.pricecharting.com/b8efd8a5b37601e72df85d23c277676aea3a3c01aa568a87f55c9a6a65a882bc/240.jpg)
Koga's Ekans [1st Edition] 77/132
Gym Challenge
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Koga's Ekans [1st Edition] #77 from Gym Challenge currently trades at $3.96 raw, with PSA 10 copies reaching $106.70 — a 26.9x grade premium.
Current Prices (USD)
Ungraded
PSA 7
PSA 8
PSA 9
PSA 10
ACE 10
BGS 10 Black
CGC 10 Pristine
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Raw Price Trend
7d
—
30d
—
90d
+22.6%
180d
+80.8%
1y
+45.1%
2y
+27.3%
5y
+76.0%
Quick price facts
Koga's Ekans [1st Edition] 77/132 from Gym Challenge has a current raw market value of $3.96.
- Current raw value
- $3.96
- PSA 9 value
- $31.95
- PSA 10 value
- $107
- PSA 10 premium vs raw
- 26.9× raw
Collector Intel
26.9x
Raw → PSA 10
High-risk grade
8.1x
Raw → PSA 9
Grade multiplier
Calculated from price history, PSA population data, and market trends. Not financial advice.
Grading Calculator
Based on PSA Standard tier (~$25 USD). Assumes a perfect PSA 10 result — actual outcome depends on card condition.
⚠️ High-variance grade. PSA 10 is 27x the raw price. The expected value accounts for the realistic probability.
$4
Buy Raw
~$25
Grading Fee
PSA Standard
$107
PSA 10 Value
+$78
Best Case (PSA 10)
if you pull a 10
Grade Multiples vs Raw
PSA 9$328.1x raw
PSA 10$10726.9x raw