Revavroom ex #81 from Shrouded Fable is a ultra_rare card that currently sells for about $2.34 ungraded, with graded copies ranging from $15.21 at grade 9 to $39.99 at grade 10. A grade 10 copy sells for around $39.99, about 17× the $2.34 raw price, so high-grade copies are worth grading.