Greavard #70 from Scarlet & Violet Black Star Promos is a reverse holo promo card that currently sells for about $1.69 ungraded, with graded copies ranging from $44.75 at grade 9 to $26.00 at grade 10. A grade 10 copy sells for around $26.00, about 15× the $1.69 raw price, so high-grade copies are worth grading.