Eidolon of the Great Revel #128 from Masters 25 is a foil rare card that currently sells for about $2.68 ungraded, with graded copies ranging from $7.99 at grade 7 to $23.91 at grade 8. A grade 8 copy sells for around $23.91, about 8.9× the $2.68 raw price, so high-grade copies are worth grading.