The Dark Alakazam (1 / 82) card can be found in the Team Rocket 1St Edition set.
Recently sold 19 times and based on those sales is worth around £49.72.
Currently, there are 6 open listings for this card on ebay.
This card sells in the range of £26.18 to £73.26, making it highly volatile.
This Rare Holo card was illustrated by Ken Sugimori.