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The maths doesn't work on Dialga #20 from Celebrations right now. At $0.24 raw against $55.00 for a PSA 10, that works out to -39% ROG. Better to put the submission slot toward a stronger card from the same set.
Among the 23 cards in Celebrations with PSA 10 sale data, Dialga ranks 16th for Return on Grading and 17th by PSA 10 price. Of the 10 Rare cards with PSA 10 sales, it is 7th 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.
