CyberPower Intelligent LCD CP1500AVRLCD 1500VA 8-Outlet UPS for $159.99 shipped.  Here is a screenshot for your reference.  Alternatively, it is also available at Newegg for the same price shipped.  This Uninterrupted Power Supply features dynamic line conditioning and a LCD diagnostic display with real-time system vitals. It also guards against surges/spikes, and offers battery backup in the event of brownouts or total power loss. In addition, it has software that automatically saves and closes open files and then shuts down the computer system in an orderly manner during power outage.  Most places have it for about $189 or more.