TCGrader's AI has graded 17 copies of Arceus & Dialga & Palkia-GX (Cosmic Eclipse), averaging 7.9 overall. Only 6% scored 9 or higher, so genuinely mint copies of this card are scarce. A grade 10 copy sells for around $1,650, about 4.3× the $383 raw price, so high-grade copies are worth grading.