The Jigglypuff (68 / 144) card can be found in the Skyridge set.
Recently sold 3 times and based on those sales is worth around £19.00.
Currently, there are 3 open listings for this card on ebay.
This card sells in the range of £9.61 to £28.39, making it quite stable.
This Common card was illustrated by Atsuko Nishida.