Cofagrigus #56 from Plasma Freeze is a holo holo_rare card that currently sells for about $4.22 ungraded, with graded copies ranging from $23.50 at grade 9 to $74.52 at grade 10. A grade 10 copy sells for around $74.52, about 18× the $4.22 raw price, so high-grade copies are worth grading.