The Regice ex (97 / 101) card can be found in the Hidden Legends set.
Recently sold 2 times and based on those sales is worth around £23.15.
Currently, there are 6 open listings for this card on ebay.
This card sells in the range of £18.37 to £27.93, making it stable.
This Rare Holo Ex card was illustrated by Mitsuhiro Arita.
The fact that it is a EX card makes it one of the more valuable cards.