I don't know how much Shoppe sells it, but physical store at KL outskirt and the one at KL city centre, have price difference, for example.
Personally , I visit Jalan Pasar at KL city, like E-mart , to purchase DVR and digital cam, much cheaper than shop I found far away from KL city. There are many CCTV (and electronics) shop at Jalan Pasar, if you are able to travel to there.