Corviknight V #TG18 from Silver Tempest Trainer Gallery is a reverse holo holo_rare card that currently sells for about $9.00 ungraded, with graded copies ranging from $16.74 at grade 9 to $49.00 at grade 10. A grade 10 copy sells for around $49.00, about 5.4× the $9.00 raw price, so high-grade copies are worth grading.