CyberPower Compact 600VA Uninterruptible Power Supply for $56.24 shipped. Here is a screenshot for your reference. This UPS comes with real-time system vitals that can be viewed from the LCD display. The unit can be mounted in a workstation cabinet or directly on the desktop. This UPS also includes PowerPanel PE Power Management software which monitors the vitals of the UPS and will safely shutdown the PC in case of a power outage. It is equipped with a RJ11/45 port to protect against surges from phone, modem, network, and broadband connections. Most places have this UPS for about $74.
Originally posted earlier, this is just a friendly reminder.