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The maths doesn't work on Mewtwo #59 from Stellar Crown right now. Raw copies trade around $0.56 while PSA 10s sell for about $15.95, a -82% Return on Grading. Grading and shipping fees would eat whatever margin is there.
Among the 60 cards in Stellar Crown with PSA 10 sale data, Mewtwo ranks 59th for Return on Grading and 60th by PSA 10 price. Of the 3 Uncommon cards with PSA 10 sales, it is 3rd for Return on Grading. The median PSA 10 in this set sells for $50.00. 2 of the 60 clear a 100% Return on Grading.
