The Gengar (11 / 110) card can be found in the Legendary Collection set.
Recently sold 6 times and based on those sales is worth around £36.76.
Currently, there are 15 open listings for this card on ebay.
This card sells in the range of £16.26 to £57.26, making it highly volatile.
This Rare Holo card was illustrated by Keiji Kinebuchi.