As one of its daily doorbusters, Best Buy offers the Neato Robotics Botvac Connected WiFi Self-Charging Robot Vacuum for $399.99 with free shipping. That's the lowest price we could find by $200. It features LaserSmart mapping and navigation system, WiFi control via Neato app, CornerClever technology, automatic carpet height adjustment, and rechargeable lithium-ion battery. Deal ends today.