I bought 3 of these last time - great for the $
http://cgi.ebay.com.au/4-CH-DVR-500G...item5888009e47
But I got these cameras:
http://cgi.ebay.com.au/18-IR-LED-Col...#ht_1670wt_918
Have a couple of J-car setups too but paid double for those.
Taking nothing away from Tim but if you can run some cables and use a computer this is a very cheap option.