Heroic Intervention #295 from Commander Masters is a foil rare card that currently sells for about $12.24 ungraded, with graded copies ranging from $8.50 at grade 9 to $9.00 at grade 9.5. A grade 9.5 copy sells for around $9.00 vs $12.24 raw. That's a modest premium, so grading only pays off for near-perfect copies.