I think in Montreal the cost to install TAG is closer to your $599 quote. But what people may not understand is that you are not only paying to have HW installed in your vehicle, which includes multiple modules running on it's own battery (5 year duration), but you are also paying for the tracking service in advance for 5 years as well. Right now I pay around $25/month for my other GPS tracking service, or almost $300 CAD a year ($230 USD). So when I consider the cost of TAG for tracking, it is nothing, I don't even know how they stay in business and cover their costs at lower pricing.
Furthermore, even at $599 for HW, install, and 5-year service, my insurance company offers a discount of $325 a year on a '21 Lexus IS, that amounts to about a 30% discount, but more importantly, pays for the entire system (and then some) after 2 years.
So the business case is a no brainer, free system with insurance discount, and peace of mind with tracking on the car. It really makes me wonder why people need to consider whether to track their vehicle or not. When the car gets stolen, the panic sets in and the frustration grows, why not make it easy and just have a tracking service recover your car. I will make sure to go to great lengths to have multiple deterrents on the car, to make the thieves walk away, and this TAG solution for me is the bare minimum and cheapest/easiest thing to get installed and depend on.