Ho-Oh-GX #SM57 from SM Black Star Promos is a reverse holo promo card that currently sells for about $5.38 ungraded, with graded copies ranging from $3.25 at grade 7 to $108 at grade 10. A grade 10 copy sells for around $108, about 20× the $5.38 raw price, so high-grade copies are worth grading.