Office Depot and OfficeMax retail stores offers the APC Back-UPS NS 600VA 8-Outlet UPS Battery Backup
, model no. BN600G, for $29.99
. (The link is for reference only; you'll need to visit an Office Depot and OfficeMax store to get this deal.) That's $10 under our mention from three weeks ago and the lowest price we've seen. (It's a current price low by $10.) It features up to 13 minutes of backup power at half load, four outlets with battery backup, four surge-protected outlets, and low battery and overload alarms.