Zekrom-EX #BW38 from BW Black Star Promos is a holo promo card that currently sells for about $5.22 ungraded, with graded copies ranging from $24.46 at grade 7 to $305 at grade 10. A grade 10 copy sells for around $305, about 58× the $5.22 raw price, so high-grade copies are worth grading.