I had some questions as I was not sure if it would be cheaper to get these pieces else where. The first thing is they want to know what memory capacity I want and the price jumps $73 for a 128GB but I can find brand new ones for less online at other places like Walmart, Best Buy, Micro Center, etc is there any benefit to getting them from BlackVue? Is there some special software loaded on to it already or that you need some special type of MicroSD on the device or does it not matter and you can buy your own? Also when they ask for cable length. is that all together or for each Coaxial cable?