VM Innovations via eBay offers the Lifesmart 5,000 BTU Window Air Conditioner, model no. LS-WAC5, for $99.99 with free shipping. That's the lowest total price we could find by $37, although we saw it for $10 less last month. It cools rooms up to 150 sq. ft. and features a window mounting kit, three cool settings, three fan speeds, and multi-directional vent.