This Belkin @ TV Plus can stream and record live TV (via your set top box), FetchTV, Foxtel, or anything with a composite or component output in SD to your phone or tablet, over wifi or 3G/4G. You can change channels with the included IR blaster.
If you have a cheap analog CCTV system you can also hook up the quad or matrix output to it so you can watch the stream live, although you won't be able to select cameras unless your CCTV system has IR support.
Next cheapest seems to be $45 from futu_online, and the price goes up from there.
The Android app has a 4-star rating:
https://play.google.com/store/apps/details?id=com.belkin.and…
Review here:
http://www.laptopmag.com/reviews/accessories/belkin-tv-plus
Looks like it used to be $179 when it first came out - that's what Scorptec have it listed for:
http://www.scorptec.com.au/product/TV_Tuner_&_Capture/Extern…
The Cons
Only streams 480p video; No HDMI support
shut it down folks, shut it down