TCGrader's AI has graded 7 copies of Blastoise & Piplup-GX (Cosmic Eclipse), averaging 8.2 overall. Only 14% scored 9 or higher, so genuinely mint copies of this card are scarce. A grade 10 copy sells for around $1,400, about 4.1× the $338 raw price, so high-grade copies are worth grading.