The Gengar (5 / 62) card can be found in the Fossil Unlimited set.
Recently sold 11 times and based on those sales is worth around £21.05.
Currently, there are 14 open listings for this card on ebay.
This card sells in the range of £14.97 to £27.13, making it quite stable.
This Rare Holo card was illustrated by Keiji Kinebuchi.