Shuckle #HGSS15 from HGSS Black Star Promos is a reverse holo promo card that currently sells for about $15.43 ungraded, with graded copies ranging from $36.65 at grade 7 to $236 at grade 10. A grade 10 copy sells for around $236, about 15× the $15.43 raw price, so high-grade copies are worth grading.