Darkrai-GX #88a from Burning Shadows is a holo holo_rare card that currently sells for about $11.24 ungraded, with graded copies ranging from $9.99 at grade 7 to $1,000 at grade 10. A grade 10 copy sells for around $1,000, about 89× the $11.24 raw price, so high-grade copies are worth grading.