Alarm question

Hi,


I have a 2002 330CI and am looking to buy an alarm. So I have a few questions.

1. Does anyone know where I can find a good price for part #65739416520?

I have seen posts on here from a few years ago quoting prices around $200 but I cannot find it new for less than around $300.00 right now.

2. Is this alarm (factory oem kit) the one I should be getting or is there a better option?

3. Finally, my keys have buttons on them that unlock and lock the car. Does that mean that even without the alarm, the car cannot be started? If not, does the oem factory alarm include that feature?


To me, that is the most important theft deterrent as I have been told it makes your vehicle nearly unstealable unless they tow it.