Quaquaval #5 from Scarlet & Violet Black Star Promos is a reverse holo promo card that currently sells for about $3.99 ungraded, with graded copies ranging from $8.00 at grade 7 to $73.00 at grade 9.5. A grade 9.5 copy sells for around $73.00, about 18× the $3.99 raw price, so high-grade copies are worth grading.