Glaceon-GX #SM147 from SM Black Star Promos is a reverse holo promo card that currently sells for about $6.63 ungraded, with graded copies ranging from $16.76 at grade 7 to $193 at grade 10. A grade 10 copy sells for around $193, about 29× the $6.63 raw price, so high-grade copies are worth grading.