Solgaleo-GX #SM104a from SM Black Star Promos is a reverse holo promo card that currently sells for about $10.27 ungraded, with graded copies ranging from $21.58 at grade 9 to $69.00 at grade 10. A grade 10 copy sells for around $69.00, about 6.7× the $10.27 raw price, so high-grade copies are worth grading.