Emrakul, the Promised End #6 from Eldritch Moon is a foil mythic card that currently sells for about $18.26 ungraded, with graded copies ranging from $69.00 at grade 9 to $102 at grade 10. A grade 10 copy sells for around $102, about 5.6× the $18.26 raw price, so high-grade copies are worth grading.