Your pishing in the wind if you want something decent at that price Tunnie

Go for 2 or 3 reasonable external wireless IP camera's with possibly SD card backup.
That way, you can either connect them (hardwire or Wi-Fi) to a DVR sat in a cupboard somewhere or stick a memory card in them and if you have the need to backup anything, you can do it direct to a computer using the Wi-Fi using the appropriate software.
What / when the individual cameras record is down to how you set each one up using motion detection.
Also if the cameras are connected via your home network, you can access each one via a computer / mobile phone anywhere

Oh yeh, focus on the quality or the lens / IR filter, NOT the dpi

720dpi is more then adequate unless you need to record at distance or are installing PTZ's
so you can sit there and zoom into peoples bedrooms at night

A few other pointers on Jimbob's post a few days ago

For what its worth, I finally got my internet installed and secured yesterday

Today, i'm running cat5e cables all over the house.
Next week, when I get paid (hopefully), i'm sticking a couple of cameras up myself