Ultra Necrozma-GX #SM126 from SM Black Star Promos is a reverse holo promo card that currently sells for about $6.62 ungraded, with graded copies ranging from $26.00 at grade 9 to $68.24 at grade 10. A grade 10 copy sells for around $68.24, about 10× the $6.62 raw price, so high-grade copies are worth grading.