The Gengar (H9) card can be found in the Skyridge set.
Recently sold 5 times and based on those sales is worth around £175.59.
Currently, there are 3 open listings for this card on ebay.
This card sells in the range of £141.73 to £209.45, making it highly volatile.
This Rare Holo card was illustrated by Kyoko Umemoto.