Misty's Tentacruel #10 from Gym Heroes is a unlimited holo holo_rare card that currently sells for about $25.17 ungraded, with graded copies ranging from $22.00 at grade 7 to $170 at grade 10. A grade 10 copy sells for around $170, about 6.8× the $25.17 raw price, so high-grade copies are worth grading.