Beach Camera via eBay offers the Evolution Robotics Mint Automatic Hard Floor Cleaner, model no. 4200, for $109.99 with free shipping. That's a $10 drop from yesterday's mention and the lowest total price we've seen. (It's a current low by $40.) This compact robot floor cleaner requires two C batteries for its NorthStar Navigation Cube and runs for up to three hours on a single charge. It includes two dry sweeping microfiber cloths and one wet mopping microfiber cloth. Deal ends September 25 at 11 am ET.