As a possible price mistake, Amazon offers the Royal Sovereign Home Products 13,500 BTU Portable Air Conditioner, model no. ARP-1314, for $106.64 with free shipping. That's the lowest total price we could find by $307. It can cool up to 600 square feet and features a washable air filter, digital controls, and 24-hour timer.

Although it's temporarily out of stock, it can still be ordered at this price for delivery when available.