Cleffa #37 from Scarlet & Violet Black Star Promos is a reverse holo promo card that currently sells for about $9.06 ungraded, with graded copies ranging from $12.50 at grade 9 to $70.00 at grade 10. A grade 10 copy sells for around $70.00, about 7.7× the $9.06 raw price, so high-grade copies are worth grading.