Quaxly #82 from Scarlet & Violet Black Star Promos is a reverse holo promo card that currently sells for about $1.48 ungraded, with graded copies ranging from $4.27 at grade 7 to $29.77 at grade 10. A grade 10 copy sells for around $29.77, about 20× the $1.48 raw price, so high-grade copies are worth grading.