This Techko Floor Maid Robotic Hard Floor Cleaning Machine, originally $129.99, is now $49.99 at Groupon Goods. Plus, shipping is free making this the best price we found by $49. This robotic floor cleaner is designed to prevent falls. It for hard floors and uses standard size wet or dry disposable cleaning cloths. It has one touch button operation with auto shut off. It includes rechargeable batteries and an AC adapter. Sales tax is charged in most states.