Bouffalant #136 from Scarlet & Violet Black Star Promos is a reverse holo promo card that currently sells for about $5.75 ungraded, with graded copies ranging from $32.63 at grade 9 to $36.00 at grade 9.5. A grade 9.5 copy sells for around $36.00, about 6.3× the $5.75 raw price, so high-grade copies are worth grading.