People have cleaned them up , as a temporary thing... then left them in there. Ours has my wife and 2 kids in it most of the time, so I just wanted it right... I lose brownie points if things don't work properly .
The thing with a used one (like anything), is you don't know how much work it's done... and low milage doesn't mean it hasn't switched a lot of times.
Edit... Post 1500. Apparently I DO spend too much time on the computer... like SHE says.