Mew ex #53 from Scarlet & Violet Black Star Promos is a reverse holo promo card that currently sells for about $84.19 ungraded, with graded copies ranging from $76.36 at grade 7 to $960 at grade 10. TCGrader's AI has graded 10 copies of Mew ex (Scarlet & Violet Black Star Promos), averaging 8.5 overall. Only 20% scored 9 or higher, so genuinely mint copies of this card are scarce. A grade 10 copy sells for around $960, about 11× the $84.19 raw price, so high-grade copies are worth grading.