Mega Diancie ex #41 from Phantasmal Flames is a holo rare card that currently sells for about $1.31 ungraded, with graded copies ranging from $7.50 at grade 7 to $25.00 at grade 10. A grade 10 copy sells for around $25.00, about 19× the $1.31 raw price, so high-grade copies are worth grading.