Mimikyu #SM99 from SM Black Star Promos is a reverse holo promo card that currently sells for about $14.99 ungraded, with graded copies ranging from $11.04 at grade 7 to $332 at grade 10. TCGrader's AI has graded 3 copies of Mimikyu (SM Black Star Promos), averaging 9 overall. 67% scored 9 or higher, so clean copies are common and centering usually decides the top grades. A grade 10 copy sells for around $332, about 22× the $14.99 raw price, so high-grade copies are worth grading.