including one of the extra sensors and instalation, and also some moving lights or something (i think he called it scaner??) it will cost me exactly $780. The MSRP for the sytem is $659. He probably gets it for alot less though.
Its a little more than i wanted to spend but who cares

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The installer also suggested the sound sensor, but i wanted to check in with you guys to see what you say, cauze i dont really have any experience with car alarms, except turning them on and off

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thanks
marin