The Kyogre EX (104 / 108) card can be found in the Dark Explorers set.
Recently sold 4 times and based on those sales is worth around £42.44.
Currently, there are 4 open listings for this card on ebay.
This card sells in the range of £38.57 to £46.31, 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.