I have a RL500 friendly robotics robomower for sale. I bought it last spring to mow my yard but I have been too lazy to bury the perimeter wire to make it work. Has less then 30 hrs (i think) from the previous owner. Needs batteries approx $60 @ batteries plus. Includes 500' spool of wire to make the virtual fence for the mower.
$225 (plus shipping if you want it shipped)