Skeledirge ex #81 from Scarlet & Violet Black Star Promos is a reverse holo promo card that currently sells for about $3.76 ungraded, with graded copies ranging from $18.00 at grade 9 to $79.00 at grade 10. A grade 10 copy sells for around $79.00, about 21× the $3.76 raw price, so high-grade copies are worth grading.