My husband said that lots of companies will put in a security system for free? Should I just pay for this pkg below or should I search for a “free” provider?

I was going to go with this package from ADT (it is a special through my insurance company):

Save $355 on Installation
Members pay only $339 – Compared to ADT’s standard $613.

Save $5 per month on Monitoring
Members pay only $23.99 a month by credit card – Compared to ADT’s standard $30.99.

Features of the Safewatch® Pro 3000 package:
Safewatch Pro Control Panel
Safewatch Pro Touchpad
4 Door/Window Contacts
Interior Sounder
Motion Sensor
Smoke/Heat or Carbon Monoxide Detector
Telephone Connection
Battery Back–up and Power Supply
Yard Sign and Window Decals

Member Benefits:
15% Insurance Credit. You may qualify for up to 15% credit off the homeowners policy basic premium.

10% Off Add–ons. Save 10% off standard