How about a Fedder's 12,000 BTU 115 votl w/remote for $238.
Not a floor model.
http://www.walmart.com/catalog/produ...uct_id=2067707

This is the one I bought:

http://www.friedrich.com/current/mod...3B30A&line=WMC

It normally goes for $650 at PC Richards appliance store in NY.
It will go inside the existing sleeve in the wall.