The Poliwag (67 / 115) card can be found in the Unseen Forces set.
Recently sold 1 times and based on those sales is worth around £60.48.
Currently, there are 11 open listings for this card on ebay.
This card sells in the range of £60.48 to £60.48, making it very stable.
This Common card was illustrated by Kagemaru Himeno.