I made a home made 1 with drill and 5 in piece of bungi straps, the rubber ones. I had an old piece of cutting bard/counter top and clamped the drill in place. Using a zip tie to hold the trigger down. Only downfall this has is its always on once you plug it in unless you have it on a switched outlet or a surge protector.
Best part is none of the materials cost me anything since I had everything laying around. When I did use it when the bird was wet it made more of a mess and some of the skin got tore but not sure if that was the plucker or me with to much pressure bird against fingers.