As one of its daily deals, Woot offers the Mr. Beams Power Outage Whole House Kit, model no. MB280, for $49.99 plus $5 for shipping. That's tied with our mention from last spring and the lowest total price we could find today by $20. It purportedly automatically detects a power failure, provides up to 40 hours of light, and includes a power outage flashlight, three stair / path lights, and three ceiling lights. It requires four AA and four C alkaline batteries (not included). Deal ends today.