average cost of a security system
After buying the security system equipment, you'll have to pay for monthly monitoring, which can run from $15 to $100, but the average price is $30.Most home security systems require one to three-year contracts, although some companies, like SimpliSafe, don't require any.ou can buy a gun (not necessarily a good one) for less than $100, but it's more likely you'll shell out several hundred dollars. The average annual cost of a large dog just in the first year alone is $1,843, according to the animal welfare organization ASPCA.