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Grading the Uncommon Double Dragon Energy from Roaring Skies isn't worth it at current prices. At $3.75 raw against $102.50 for a PSA 10, that works out to 9% ROG. Better to put the submission slot toward a stronger card from the same set.
Among the 43 cards in Roaring Skies with PSA 10 sale data, Double Dragon Energy ranks 33rd for Return on Grading and 33rd by PSA 10 price. The median PSA 10 in this set sells for $749.99. 28 of the 43 clear a 100% Return on Grading.