![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 $3.92 raw, with PSA 10 copies reaching $136.00 — a 34.7x grade premium. The card has gained 18.1% over the past 30 days.
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
-2.0%
30d
+18.1%
90d
—
180d
+18.1%
1y
+47.9%
2y
+26.0%
5y
+74.2%
Quick price facts
Koga's Ekans [1st Edition] 77/132 from Gym Challenge has a current raw market value of $3.92.
- Current raw value
- $3.92
- PSA 9 value
- $30.22
- PSA 10 value
- $136
- Raw value 7d
- -2.0%
- Raw value 30d
- +18.1%
- PSA 10 premium vs raw
- 34.7× raw
Collector Intel
34.7x
Raw → PSA 10
High-risk grade
7.7x
Raw → PSA 9
Grade multiplier
+18.1%
30d Price Move
Rising
Steady
Price Stability
2.0% swing this week
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 35x the raw price. The expected value accounts for the realistic probability.
$4
Buy Raw
~$25
Grading Fee
PSA Standard
$136
PSA 10 Value
+$107
Best Case (PSA 10)
if you pull a 10
Grade Multiples vs Raw
PSA 9$307.7x raw
PSA 10$13634.7x raw