![Porygon [Green Back] #137 Pokémon card from Japanese Topsun](https://storage.googleapis.com/images.pricecharting.com/reff62b80f0bc36dd0fda39d63c0871dd478a2e2aefe91922772589fe52c3871b16/240.jpg)
Japanese
Porygon [Green Back] 137/248
Topsun· Language: Japanese
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Porygon [Green Back] #137 from Japanese Topsun currently trades at $13.71 raw, with PSA 10 copies reaching $532.00 — a 38.8x grade premium. The card has lost 35.5% 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
-35.5%
30d
-35.5%
90d
—
180d
—
1y
+53.2%
2y
+97.3%
5y
—
Quick price facts
Porygon [Green Back] 137/248 from Topsun has a current raw market value of $13.71.
- Current raw value
- $13.71
- PSA 9 value
- $78.00
- PSA 10 value
- $532
- Raw value 7d
- -35.5%
- Raw value 30d
- -35.5%
- PSA 10 premium vs raw
- 38.8× raw
Collector Intel
38.8x
Raw → PSA 10
High-risk grade
5.7x
Raw → PSA 9
Grade multiplier
-35.5%
30d Price Move
Falling
Volatile
Price Stability
35.5% 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 39x the raw price. The expected value accounts for the realistic probability.
$14
Buy Raw
~$25
Grading Fee
PSA Standard
$532
PSA 10 Value
+$493
Best Case (PSA 10)
if you pull a 10
Grade Multiples vs Raw
PSA 9$785.7x raw
PSA 10$53238.8x raw