Blacephalon #SM221 from SM Black Star Promos is a reverse holo promo card that currently sells for about $10.69 ungraded, with graded copies ranging from $11.50 at grade 7 to $74.41 at grade 10. A grade 10 copy sells for around $74.41, about 7× the $10.69 raw price, so high-grade copies are worth grading.