Ebay offers Refurbished Aiper Seagull Pro Cordless Robotic Pool Cleaner for $459.99 (reg $919.99) with free shipping.

Product Description:
Meet Aiper’s Powerful Pool Vacuum, the Aiper Seagull Pro. This pool vacuum is the ultimate time-saver, money-saver and life-saver. With a quad-motor system and WavePath Navigation Technology, it cleans your entire pool, including the walls and waterline.

• Clean the Floor, Wall and Waterline: Equipped with 4-Wheel drive system, the pool cleaner can climb your pool wall effortlessly and scrub the waterline effectively. Three cleaning modes allow you to control your clean and target those pesky trouble spots in your pool.
• Strong Cordless Robotic Pool Cleaner: The powerful quad-motor system utilizes up to 200W of power to filter 80 gallons of your pool’s water per minute allowing it to collect and trap more debris from leaves to dirt, to pebbles and sticks, and more.
• 10X More Cleaning & Energy Efficient: WavePath Navigation allows the pool vacuum to work in a fixed pattern rather than the traditional random pattern. The cordless design means no tangled cords and no messy or complicated accessories. Just drop the pool cleaner into the pool and get back to your free time.
• Buy with Confidence: The Aiper Seagull Pro comes with 2-Year warranty and worry-free service. The top access filter basket eliminates the need to disassemble the cleaner to remove debris, simply rinse with a water hose, minimising the need for secondary cleaning. Get the most out of your pool and the pleasure it brings!