The Cynthia & Caitlin (228 / 236) card can be found in the Cosmic Eclipse set.
Recently sold 9 times and based on those sales is worth around £94.43.
Currently, there are 9 open listings for this card on ebay.
This card sells in the range of £79.36 to £109.50, making it quite volatile.
This Rare Ultra card was illustrated by Sakiko Maeda.