aSavings via eBay still offers the Skylink Security System Deluxe Kit, model no. SC-100, for $79.95 with free shipping. That's tied with our mention from two weeks ago and the lowest total price we could find now by $7. This system is designed to secure homes and spaces of up to 3,000 square feet. It features a control panel, motion sensor, two door or window contact sensors, and keychain transmitter.