Sword of Truth and Justice #229 from Modern Horizons is a mythic card that currently sells for about $34.95 ungraded, with graded copies ranging from $1.06 at grade 7 to $37.00 at grade 10. A grade 10 copy sells for around $37.00 vs $34.95 raw. That's a modest premium, so grading only pays off for near-perfect copies.