I have one of these brand new in original package - Pyle-Home PWRC62 6.5-Inch In-Ceiling Dual-Channel/Voice Coil Weather Proof Speaker. Almost $70 after taxes - $40 here.
The Pyle Home PWRC62 dual-channel in-ceiling speaker system delivers stereo sound to any room in your home or office without cluttering floor space. The moisture-resistant speakers can be placed indoors, outdoors, or anywhere excessive moisture is a consideration. Included in the kit is the mounting hardware for installation, and a template for existing construction. For new construction, consider one of Pyle's mounting brackets for precise installation.