Redkey MGC500 Robot Lawn Mower with 390ft Boundary Wires for 0.12 Acre (1/8 Acre), 45% Slope, 70Mins Runtime, Auto Recharge, Automatic Robotic Lawn Mower w/Precise Location & Breakpoint Detection Mows up to 1/8 (0.12) acre is up for auction in Patio, Lawn & Garden. The current bid is $50.50, 82% below the $274.99 MSRP, in Good Condition. This auction has ended — similar items appear in live auctions regularly.