Whismur #19 from Nintendo Black Star Promos is a holo promo card that currently sells for about $5.00 ungraded, with graded copies ranging from $12.08 at grade 7 to $18.17 at grade 9.5. A grade 9.5 copy sells for around $18.17, about 3.6× the $5.00 raw price, so high-grade copies are worth grading.