Tadd Wholesale via eBay offers the Haier Serenity Series 6,050-BTU Window Air Conditioner, model no. ESAQ406P, for $154.99 with free shipping. That's the best deal today by $120 and the lowest total price we've seen. (We saw it for $196 bundled with $40 Kohl's Cash in June, although that required a $25 mail-in rebate.) It cools rooms up to 250-sq. ft. and features four modes (cool, fan, energy saver, and dehumidify), a programmable 24-hour timer, and full-function LCD remote. Deal ends September 21.