The Palkia EX (100 / 101) card can be found in the Plasma Blast set.
Recently sold 2 times and based on those sales is worth around £36.26.
Currently, there are 9 open listings for this card on ebay.
This card sells in the range of £32.25 to £40.27, making it stable.
This Rare Ultra card was illustrated by 5ban Graphics.
The fact that it is a EX card makes it one of the more valuable cards.