Today only through 1 pm ET, Amazon offers the APC Back-UPS Pro 1500 865-watt Battery Backup, model no. BR1500G, for $129.99 with free shipping. That's $35 less than our August mention and the lowest total price we could find by $50. It features a 3-minute runtime at full load and surge suppression.
TigerDirect offers the Xfinity Pro Series 1000VA Uninterruptible Power Supply, model no. U12-42366, for $89.99. This $40 mail-in rebate cuts it to $49.99. With around $11 for shipping, that's $45 under the lowest total price we could find for a similar power supply. It features an LCD display panel, eight outlets, and 860 Joules of surge protection. Rebate ends December 12.