Smoliv #23 from Scarlet & Violet Black Star Promos is a reverse holo promo card that currently sells for about $0.76 ungraded, with graded copies ranging from $5.26 at grade 9 to $20.00 at grade 10. A grade 10 copy sells for around $20.00, about 26× the $0.76 raw price, so high-grade copies are worth grading.