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The maths doesn't work on the Rare Cosmoem from Celebrations right now. Raw copies trade around $0.00 while PSA 10s sell for about $182.50, a 0% Return on Grading. Hold it raw and watch for the graded price to move.
Among the 23 cards in Celebrations with PSA 10 sale data, Cosmoem ranks 23rd for Return on Grading and 5th by PSA 10 price. Of the 10 Rare cards with PSA 10 sales, it is 10th for Return on Grading. The median PSA 10 in this set sells for $119.99. 4 of the 23 clear a 100% Return on Grading.
