Rejuvenating Springs #424 from Commander Masters is a rare card that currently sells for about $18.36 ungraded, with graded copies ranging from $7.95 at grade 9 to $9.00 at grade 9.5. A grade 9.5 copy sells for around $9.00 vs $18.36 raw. That's a modest premium, so grading only pays off for near-perfect copies.