I found a used Marco draine machine on CL and am not sure how good it will be. Don't know the model, but it has the open wire drum, "5 hp" motor (doesn't seem right, her description), and does not have an auto feed. It's $400 with 1 empty drum and 1 full drum and a foot pedal. The lady selling it doesn't know what size cable or how much of it there is. Should I consider this machine?