Reshiram #BW23 from BW Black Star Promos is a reverse holo promo card that currently sells for about $4.62 ungraded, with graded copies ranging from $34.00 at grade 9 to $550 at grade 10. A grade 10 copy sells for around $550, about 119× the $4.62 raw price, so high-grade copies are worth grading.