Alolan Sandslash #SM18 from SM Black Star Promos is a reverse holo promo card that currently sells for about $10.05 ungraded, with graded copies ranging from $69.28 at grade 9 to $87.89 at grade 10. A grade 10 copy sells for around $87.89, about 8.7× the $10.05 raw price, so high-grade copies are worth grading.