The Primal Groudon EX (151 / 160) card can be found in the Primal Clash set.
Recently sold 6 times and based on those sales is worth around £24.36.
Currently, there are 6 open listings for this card on ebay.
This card sells in the range of £16.55 to £32.17, making it quite 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.