Song of the Dryads #324 from Commander Masters is a rare card that currently sells for about $7.42 ungraded, with graded copies ranging from $11.07 at grade 9 to $12.00 at grade 9.5. A grade 9.5 copy sells for around $12.00 vs $7.42 raw. That's a modest premium, so grading only pays off for near-perfect copies.