Zekrom-EX #52 from Legendary Treasures is a reverse holo holo_rare card that currently sells for about $8.75 ungraded, with graded copies ranging from $7.13 at grade 7 to $338 at grade 10. A grade 10 copy sells for around $338, about 39× the $8.75 raw price, so high-grade copies are worth grading.