Is it possible to build something like this, using a pc so that it comes cheaper? I have plenty of spares to build a pc for the purpose. All I would need would be the camera. And perhaps some kind of pci card? To buy the above system in link and one camera it'd cost me €323.58 whereas if I only buy a camera I wouldn't spend more than €40 maximum... What I have in mind is something which is powered on and records on a 500GB or 1TB HDD.