Darkrai-GX #158 from Burning Shadows is a reverse holo rare card that currently sells for about $30.62 ungraded, with graded copies ranging from $17.42 at grade 7 to $1,000 at grade 10. A grade 10 copy sells for around $1,000, about 33× the $30.62 raw price, so high-grade copies are worth grading.