Ketramose, the New Dawn #482 from Aetherdrift is a foil mythic card that currently sells for about $21.12 ungraded, with graded copies ranging from $30.99 at grade 9 to $34.00 at grade 9.5. A grade 9.5 copy sells for around $34.00 vs $21.12 raw. That's a modest premium, so grading only pays off for near-perfect copies.