Gisa and Geralf #183 from Eldritch Moon is a mythic card that currently sells for about $0.54 ungraded, with graded copies ranging from $19.99 at grade 9 to $22.00 at grade 9.5. A grade 9.5 copy sells for around $22.00, about 41× the $0.54 raw price, so high-grade copies are worth grading.