Best Buy offers the APC J25B Power Conditioner with 1500VA UPS Battery Back-Up System for $99 plus free shipping. That's $36 under our August mention, although we saw it bundled with a $10 Best Buy gift card for a buck more during Black Friday week. (It's also a current price low by $137.) Sales tax is added where applicable. This device provides surge protection, power conditioning, and battery backup for an audio-video system.