Yamper #99 from Phantasmal Flames is a holo illustration_rare card that currently sells for about $3.70 ungraded, with graded copies ranging from $10.00 at grade 7 to $40.16 at grade 10. A grade 10 copy sells for around $40.16, about 11× the $3.70 raw price, so high-grade copies are worth grading.