Shieldon #DP08 from DP Black Star Promos is a reverse holo promo card that currently sells for about $2.99 ungraded, with graded copies ranging from $9.50 at grade 7 to $146 at grade 10. A grade 10 copy sells for around $146, about 49× the $2.99 raw price, so high-grade copies are worth grading.