![Koffing [Green Back] #109 Pokémon card from Japanese Topsun](https://storage.googleapis.com/images.pricecharting.com/ref36662d147bd3c01bc835f2430f7b666ae5f295c04ef4f978b88f1358f1ba448f/240.jpg)
Japanese
Koffing [Green Back] 109/248
Topsun· Language: Japanese
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Koffing [Green Back] #109 from Japanese Topsun currently trades at $14.10 raw, with PSA 10 copies reaching $236.24 — a 16.8x grade premium. The card has gained 8.7% 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
+0.0%
30d
+8.7%
90d
—
180d
—
1y
+84.8%
2y
+66.5%
5y
—
Quick price facts
Koffing [Green Back] 109/248 from Topsun has a current raw market value of $14.10.
- Current raw value
- $14.10
- PSA 9 value
- $32.00
- PSA 10 value
- $236
- Raw value 30d
- +8.7%
- PSA 10 premium vs raw
- 16.8× raw
Collector Intel
16.8x
Raw → PSA 10
High-risk grade
2.3x
Raw → PSA 9
Grade multiplier
+8.7%
30d Price Move
Rising
Steady
Price Stability
0.0% 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 17x the raw price. The expected value accounts for the realistic probability.
$14
Buy Raw
~$25
Grading Fee
PSA Standard
$236
PSA 10 Value
+$197
Best Case (PSA 10)
if you pull a 10
Grade Multiples vs Raw
PSA 9$322.3x raw
PSA 10$23616.8x raw