Noctowl #HGSS06 from HGSS Black Star Promos is a holo promo card that currently sells for about $5.80 ungraded, with graded copies ranging from $14.00 at grade 7 to $766 at grade 10. A grade 10 copy sells for around $766, about 132× the $5.80 raw price, so high-grade copies are worth grading.