Hydreigon-EX #103 from Roaring Skies is a rare card that currently sells for about $18.59 ungraded, with graded copies ranging from $25.73 at grade 7 to $2,150 at grade 10. A grade 10 copy sells for around $2,150, about 116× the $18.59 raw price, so high-grade copies are worth grading.