Charizard ex #56 from Scarlet & Violet Black Star Promos is a reverse holo promo card that currently sells for about $15.11 ungraded, with graded copies ranging from $19.50 at grade 7 to $155 at grade 10. TCGrader's AI has graded 4 copies of Charizard ex (Scarlet & Violet Black Star Promos), averaging 8.9 overall. 50% scored 9 or higher, so a strong copy is achievable but far from guaranteed. A grade 10 copy sells for around $155, about 10× the $15.11 raw price, so high-grade copies are worth grading.