Trevenant-EX #19 from Primal Clash is a holo holo_rare card that currently sells for about $2.80 ungraded, with graded copies ranging from $2.56 at grade 7 to $450 at grade 10. A grade 10 copy sells for around $450, about 161× the $2.80 raw price, so high-grade copies are worth grading.