APC UPS with AVR, 550W battery backup surge protector, $50 + tax, from Office Depot
 

APC Back-UPS ES 550 Battery Backup, BE550G, 550VA/330 Watt, Item # 911559
* Provides battery backup for your home computers in case of power failure
* Protects your connected equipment from damaging surges and spikes that travel over utility and phone/fax lines.
* Saves your open files and gracefully shuts down your system in the event of extended power outages.
* Includes 8 power outlets (4 with battery backup plus surge protection, 4 with surge protection only).

Only $49.99 + tax (if applicable to your area)
expires 4/9

From OfficeDepot.com

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