The Dark Machamp (10 / 82) card can be found in the Team Rocket 1St Edition set.
Recently sold 6 times and based on those sales is worth around £40.50.
Currently, there are 17 open listings for this card on ebay.
This card sells in the range of £22.73 to £58.27, making it quite volatile.
This Rare Holo card was illustrated by Mitsuhiro Arita.