Skip For Now
Grading Mimikyu from Paldean Fates isn't worth it at current prices. At $0.33 raw against $30.00 for a PSA 10, that works out to -67% ROG. Grading and shipping fees would eat whatever margin is there.
Among the 174 cards in Paldean Fates with PSA 10 sale data, Mimikyu ranks 163rd for Return on Grading and 163rd by PSA 10 price. Of the 3 Rare cards with PSA 10 sales, it is 2nd for Return on Grading. The median PSA 10 in this set sells for $75.43. 16 of the 174 clear a 100% Return on Grading.
