Yikes! that is pricey. It would be pretty easy to build that same capacity with 3 200W NewPowa panels and Victron MPPT for less than 1/2 of that .This is the zamp kit for a long term on road build.
I am not criticizing it in any way, but it is an example of how easy it is to miss the effect of getting tied into a proprietary setup that seems inexpensive when you start but the add on items really add up vs the ability to open source panels, etc.
Ideal for tiny houses, large RVs, or small cabins that run off a 12-volt battery, our 680-watt kit is the perfect way to power your off-grid lifestyle. Need a more energy? This kit can expand up to 1020-watts for larger off-grid or boondocking needs. 680-Watt Kit Includes: 4 x 170-Watt Panels...thevanmart.com