Serperior V #7 from Silver Tempest is a reverse holo holo_rare card that currently sells for about $1.56 ungraded, with graded copies ranging from $10.75 at grade 9 to $26.00 at grade 10. A grade 10 copy sells for around $26.00, about 17× the $1.56 raw price, so high-grade copies are worth grading.