Endurance #317 from Modern Horizons 2 is a full art / borderless mythic card that currently sells for about $12.69 ungraded, with graded copies ranging from $125 at grade 9 to $138 at grade 9.5. A grade 9.5 copy sells for around $138, about 11× the $12.69 raw price, so high-grade copies are worth grading.