Edgar Markov #428 from Innistrad Remastered is a retro frame mythic card that currently sells for about $2,823 ungraded, with graded copies ranging from $2,175 at grade 9 to $3,500 at grade 9.5. A grade 9.5 copy sells for around $3,500 vs $2,823 raw. That's a modest premium, so grading only pays off for near-perfect copies.