Skithiryx, the Blight Dragon #107 from Double Masters is a mythic card that currently sells for about $11.83 ungraded, with graded copies ranging from $49.99 at grade 9 to $28.00 at grade 10. A grade 10 copy sells for around $28.00, about 2.4× the $11.83 raw price, so high-grade copies are worth grading.