The Mankey (81 / 110) card can be found in the Legendary Collection set.
Recently sold 8 times and based on those sales is worth around £19.59.
Currently, there are 6 open listings for this card on ebay.
This card sells in the range of £11.00 to £28.18, making it quite stable.
This Common card was illustrated by Sumiyoshi Kizuki.