Where or what is the price for a gem mint Japanese Holo Cool Porygon? Please
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The Japanese Cool Porygon came out in the first Promo CD from Japan along with 9 other Promo cards, including a Charizard, Venusaur, and Blastoise.  The entire set can be bought for anywhere from $60 - $90 usually.  The Japanese Cool Porygon usually books for anywhere from $8 - $11, maybe a little higher or lower dependant on the area.