The Dark Dugtrio (6 / 82) card can be found in the Team Rocket 1St Edition set.
Recently sold 13 times and based on those sales is worth around £28.30.
Currently, there are 34 open listings for this card on ebay.
This card sells in the range of £6.60 to £50.00, making it highly volatile.
This Rare Holo card was illustrated by Kagemaru Himeno.