Slowbro-EX #26 from Evolutions is a holo holo_rare card that currently sells for about $2.25 ungraded, with graded copies ranging from $4.25 at grade 7 to $45.00 at grade 10. A grade 10 copy sells for around $45.00, about 20× the $2.25 raw price, so high-grade copies are worth grading.