![Koga's Koffing [1st Edition] #79 Pokémon card from Gym Challenge](https://storage.googleapis.com/images.pricecharting.com/84233ac60a43b86fffd6ef77baf9597f8f9d7e0953a567174c3a3ecdf4023a1b/240.jpg)
Koga's Koffing [1st Edition] 79/132
Gym Challenge
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Koga's Koffing [1st Edition] #79 from Gym Challenge currently trades at $3.36 raw, with PSA 10 copies reaching $152.50 — a 45.4x 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
-10.2%
30d
—
90d
+2.4%
180d
+13.9%
1y
+22.2%
2y
-6.9%
5y
+0.0%
Quick price facts
Koga's Koffing [1st Edition] 79/132 from Gym Challenge has a current raw market value of $3.36.
- Current raw value
- $3.36
- PSA 9 value
- $22.82
- PSA 10 value
- $153
- Raw value 7d
- -10.2%
- PSA 10 premium vs raw
- 45.4× raw
Collector Intel
45.4x
Raw → PSA 10
High-risk grade
6.8x
Raw → PSA 9
Grade multiplier
Moderate
Price Stability
10.2% 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 45x the raw price. The expected value accounts for the realistic probability.
$3
Buy Raw
~$25
Grading Fee
PSA Standard
$153
PSA 10 Value
+$124
Best Case (PSA 10)
if you pull a 10
Grade Multiples vs Raw
PSA 9$236.8x raw
PSA 10$15345.4x raw