Mega Dragonite ex #290 from Ascended Heroes is a holo illustration_rare card that currently sells for about $500 ungraded, with graded copies ranging from $525 at grade 7 to $920 at grade 10. TCGrader's AI has graded 27 copies of Mega Dragonite ex (Ascended Heroes), averaging 8.6 overall. 70% scored 9 or higher, so clean copies are common and centering usually decides the top grades. A grade 10 copy sells for around $920 vs $500 raw. That's a modest premium, so grading only pays off for near-perfect copies.