Walking Wake ex #178 from Prismatic Evolutions is a holo hyper_rare card that currently sells for about $7.49 ungraded, with graded copies ranging from $11.00 at grade 7 to $135 at grade 10. TCGrader's AI has graded 3 copies of Walking Wake ex (Prismatic Evolutions), averaging 9.3 overall. 100% scored 9 or higher, so clean copies are common and centering usually decides the top grades. A grade 10 copy sells for around $135, about 18× the $7.49 raw price, so high-grade copies are worth grading.