The Nidoking (150 / 147) card can be found in the Aquapolis set.
Recently sold 6 times and based on those sales is worth around £171.83.
Currently, there are 7 open listings for this card on ebay.
This card sells in the range of £0.01 to £993.50, making it highly volatile.
This Rare Secret card was illustrated by Hironobu Yoshida.