The Rayquaza ex (97 / 97) card can be found in the Dragon set.
Recently sold 22 times and based on those sales is worth around £86.70.
Currently, there are 12 open listings for this card on ebay.
This card sells in the range of £37.13 to £136.27, making it highly volatile.
This Rare Holo Ex card was illustrated by Hikaru Koike.
The fact that it is a EX card makes it one of the more valuable cards.