Eri #136 from Prismatic Evolutions is a holo ultra_rare card that currently sells for about $1.99 ungraded, with graded copies ranging from $7.75 at grade 7 to $45.95 at grade 10. A grade 10 copy sells for around $45.95, about 23× the $1.99 raw price, so high-grade copies are worth grading.