Minun #HGSS17 from HGSS Black Star Promos is a holo promo card that currently sells for about $9.45 ungraded, with graded copies ranging from $13.00 at grade 7 to $170 at grade 10. A grade 10 copy sells for around $170, about 18× the $9.45 raw price, so high-grade copies are worth grading.