Gholdengo ex #139 from Paradox Rift is a reverse holo rare card that currently sells for about $7.28 ungraded, with graded copies ranging from $18.96 at grade 9 to $30.00 at grade 10. A grade 10 copy sells for around $30.00, about 4.1× the $7.28 raw price, so high-grade copies are worth grading.