Mega Gardevoir ex #178 from Mega Evolution is a holo illustration_rare card that currently sells for about $146 ungraded, with graded copies ranging from $100 at grade 7 to $268 at grade 10. TCGrader's AI has graded 8 copies of Mega Gardevoir ex (Mega Evolution), averaging 8.7 overall. Only 25% scored 9 or higher, so genuinely mint copies of this card are scarce. A grade 10 copy sells for around $268 vs $146 raw. That's a modest premium, so grading only pays off for near-perfect copies.