If you commit to a three year contract, the price of the Nest service drops to $19 per month. Ring's Protect Plus plan goes
for $10 per month and doesn't require a contract. Monitoring for professionally installed systems tends to be more expensive. The ADT Pulse monitoring
service starts at $28. 99 per month and requires a three year contract, but you also have to figure in the cost of things like hardware components, cellular backup, and installation. When we reviewed the Pulse system, our upfront cost was more than $3,000, with a monthly fee of over $60. Some vendors, such as LifeShield, will let you buy the components outright or lease them. For example, LifeShield's Security Essentials system will cost you $29. 99 per month for three years and includes monitoring, but you'll pay a $99 activation fee and you don't own the equipment at the end of the lease. Or, you can pay $299. 99 upfront for the hardware and still get monitoring but avoid the activation fee.