Refurb King via eBay offers the refurbished LG 7,000 BTU Portable Air Conditioner, model no. LP0711WNR, for $159.99 with free shipping. That's $141 under the lowest total price we could find for a new unit, although we saw a refurb for $10 less last winter. It features multiple fan speeds, auto cool mode, programmable 24-hour timer, and a remote control.
A 90-day warranty applies, but it is unclear who backs it.