The Regice ex (97 / 101) card can be found in the Hidden Legends set.
Recently sold 6 times and based on those sales is worth around £29.10.
Currently, there is 1 open listing for this card on ebay.
This card sells in the range of £18.05 to £40.15, making it quite volatile.
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.