Lucario-GX #SM100 from SM Black Star Promos is a reverse holo promo card that currently sells for about $8.79 ungraded, with graded copies ranging from $11.00 at grade 7 to $70.74 at grade 10. A grade 10 copy sells for around $70.74, about 8× the $8.79 raw price, so high-grade copies are worth grading.