Esper Sentinel #12 from Modern Horizons 2 is a rare card that currently sells for about $51.38 ungraded, with graded copies ranging from $30.00 at grade 9 to $65.00 at grade 10. A grade 10 copy sells for around $65.00 vs $51.38 raw. That's a modest premium, so grading only pays off for near-perfect copies.