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Grading the Promo Miraidon from Scarlet & Violet Black Star Promos isn't worth it at current prices. Raw copies trade around $61.41 while PSA 10s sell for about $119.99, a -21% Return on Grading. Better to put the submission slot toward a stronger card from the same set.
Among the 25 cards in Scarlet & Violet Black Star Promos with PSA 10 sale data, Miraidon ranks 11th for Return on Grading and 11th by PSA 10 price. Of the 25 Promo cards with PSA 10 sales, it is 11th for Return on Grading. The median PSA 10 in this set sells for $60.00. 5 of the 25 clear a 100% Return on Grading.
