Cobalion #BW72 from BW Black Star Promos is a holo promo card that currently sells for about $3.39 ungraded, with graded copies ranging from $15.00 at grade 9 to $66.13 at grade 10. A grade 10 copy sells for around $66.13, about 20× the $3.39 raw price, so high-grade copies are worth grading.