Soulstone Sanctuary #487 from Foundations is a extended art rare card that currently sells for about $23.50 ungraded, with graded copies ranging from $24.99 at grade 9 to $27.00 at grade 9.5. A grade 9.5 copy sells for around $27.00 vs $23.50 raw. That's a modest premium, so grading only pays off for near-perfect copies.