Seasoned Pyromancer #145 from Modern Horizons is a mythic card that currently sells for about $8.98 ungraded, with graded copies ranging from $12.00 at grade 9 to $13.00 at grade 9.5. A grade 9.5 copy sells for around $13.00 vs $8.98 raw. That's a modest premium, so grading only pays off for near-perfect copies.