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The maths doesn't work on Jirachi from Paradox Rift right now. The gap between the $0.19 raw price and the $50.00 PSA 10 price gives a -45% Return on Grading. Hold it raw and watch for the graded price to move.
Among the 112 cards in Paradox Rift with PSA 10 sale data, Jirachi ranks 68th for Return on Grading and 71st by PSA 10 price. The median PSA 10 in this set sells for $68.25. 6 of the 112 clear a 100% Return on Grading.