Ahh well, I appreciate the advice. Its simply not worth $300 bucks for me, and I liked the idea of using my own key fob. I know for a fact this unit is not used. It actually doesn't look cheap at all. There is a little black box included with several connectors that attach to the black box which look identical to the connectors used in all cars, the only difference being the opposite ends of the connectors are just a dead end wire. Meaning I would have to strip the plastic away just to see the wire and then splice it to another wire using my own connector. Easy enough if you know which wires. I may check to see how much best buy would charge to just install this box, or maybe check on some other local alarm installers. Ive seen quite a bit of DIY guides on these forums for other rather technical things, to include installs for my Tundra and my motorcyle so figured it was a shot to come and ask. Thanks for the advice.
BTW, I did buy it on Ebay but they have a full blown website that sells various levels of car alarms etc, and they are also sold on Amazon. I think the price was as cheap as it is because of the fact that you really need to know what you are doing to install it, its not just plug and play, and the fact that its not an alarm as well because it relies on your already installed factory alarm. My guess is this device is generally bought by installers, to include Best buy who then charge you the mark up. They have a phone number, maybe I will see what they say when I call them, but I doubt they are going to be of much help over the phone.