The Dark Dragonite (5 / 110) card can be found in the Legendary Collection set.
Recently sold 6 times and based on those sales is worth around £19.50.
Currently, there are 11 open listings for this card on ebay.
This card sells in the range of £11.90 to £27.10, making it quite stable.
This Rare Holo card was illustrated by Mitsuhiro Arita.