Iron Valiant ex #68 from Scarlet & Violet Black Star Promos is a reverse holo promo card that currently sells for about $0.80 ungraded, with graded copies ranging from $7.00 at grade 9 to $26.53 at grade 10. A grade 10 copy sells for around $26.53, about 33× the $0.80 raw price, so high-grade copies are worth grading.