The Nidoking (H18) card can be found in the Aquapolis set.
Recently sold 1 times and based on those sales is worth around £30.57.
Currently, there are 4 open listings for this card on ebay.
This card sells in the range of £30.57 to £30.57, making it very stable.
This Rare Holo card was illustrated by Naoyo Kimura.