For its members only, Costco offers the Ring Alarm Wireless 10-Piece Security Kit for $199.99 with free shipping. That's $20 under our mention from almost three weeks ago, and tied with our Black Friday week mention as the lowest price we've ever seen. (It's a current low by $89.) This kit includes: base station keypad range extender motion sensor 6 contact sensors
You don't need to hire a contractor or do extensive renovations to add value to your home.