As one of its daily deals, B&H Photo Video offers the APC Back-UPS NS 600VA 8-Outlet UPS Battery Backup, model no. BN600G, for $29.99 with free shipping. That's $5 under our expired mention from three days ago and the lowest total price we've seen. (It's the best deal today by $36.) 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. Deal ends today.