Vaporeon ex #23 from Prismatic Evolutions is a holo rare card that currently sells for about $3.48 ungraded, with graded copies ranging from $11.00 at grade 7 to $80.00 at grade 10. A grade 10 copy sells for around $80.00, about 23× the $3.48 raw price, so high-grade copies are worth grading.