Power Over Ethernet (POE) one of the family of single wire IP CCTV Solutions. http://kanshare.com/Solutions/single-wire-ip-cctv-solutions/
Here are the latest POE CCTV KIT prices.
So simple you can Do It Yourself. (D-I-Y). Just choose what you need. Make payment and send proof of payment. Then send in choice of pick or delivery method of your liking.
Installation solution also offered. Priced separately.