Mega Diancie ex #267 from Ascended Heroes is a ultra_rare card that currently sells for about $4.99 ungraded, with graded copies ranging from $10.85 at grade 7 to $43.00 at grade 10. TCGrader's AI has graded 10 copies of Mega Diancie ex (Ascended Heroes), averaging 8.6 overall. 40% scored 9 or higher, so a strong copy is achievable but far from guaranteed. A grade 10 copy sells for around $43.00, about 8.6× the $4.99 raw price, so high-grade copies are worth grading.