Marnie #SWSH121 from SWSH Black Star Promos is a reverse holo promo card that currently sells for about $26.99 ungraded, with graded copies ranging from $14.00 at grade 7 to $146 at grade 10. A grade 10 copy sells for around $146, about 5.4× the $26.99 raw price, so high-grade copies are worth grading.