here is a good system take look

[source]

here it is purchase 2 week ago easy setup .here it is#

[mtrbo]

That NVR is only 720p & did you see it's TVI codec? which means coaxial cable only good if, you have an old camera systems and just want ot do a quick upgrade from cameras like 600TVL etc.
& don't want to run new cables.
Price is ok at $50 buck but plus cameras which you can get IP 1080P cameras for the same price as TVI cameras

I personally only will install SDI cameras because the image quality is better then TVI which is how the image is encoded Also most SDI are either 2.0, 2.1 or 2.2mp & 1080p. not alot of difference in price.

I'm just saying.....

Apart from that, the price is right & you can't complain, for $50 bucks.