Celesteela-GX #SM67 from SM Black Star Promos is a reverse holo promo card that currently sells for about $4.39 ungraded, with graded copies ranging from $19.50 at grade 9 to $85.00 at grade 10. A grade 10 copy sells for around $85.00, about 19× the $4.39 raw price, so high-grade copies are worth grading.