Double Dragon Energy #97 from Roaring Skies is a uncommon card that currently sells for about $3.15 ungraded, with graded copies ranging from $4.00 at grade 7 to $5.50 at grade 10. A grade 10 copy sells for around $5.50 vs $3.15 raw. That's a modest premium, so grading only pays off for near-perfect copies.