TCGrader's AI has graded 6 copies of Eevee & Snorlax-GX (SM Black Star Promos), averaging 8.1 overall. Only 17% scored 9 or higher, so genuinely mint copies of this card are scarce. A grade 10 copy sells for around $1,300, about 8× the $162 raw price, so high-grade copies are worth grading.