Alder costs $40 to $60 per month, by our estimate. Alder likes to customize its monitoring packages to each customer, so monthly rates vary. When we tested Alder, they charged us $40 per month for a monitoring package that includes basic equipment:
Touchscreen control panel: 1
Contact sensors: 2
Motion sensors: 1
Choosing a more expensive package will give you more equipment, but again, you will have to speak with a sales representative to know the exact inclusions of the package.