As other people have said, this seems sus. I work for a PV, inverter and battery manufacturer and that flier has left a lot of things unclear. Like what brand the modules are from? what is the kW rating of the PV array? what is the throughput of the inverter (both ac and dc)? how many batteries? what the kWh storage of each battery?
Even things like: what is the weatherproof (IP) rating on the inverter and battery, this will impact where you install it. What are the warranty periods on the solar modules and battery and inverter.
If you were to even consider going with that you should definitely call and seek clarification on some of the above questions.
If you are generally interested in getting some installed, a good resource to know is Solar Quotes (https://www.solarquotes.com.au/). It is run by an electrical engineer who doesn’t seem to be a representative of any of the manufacturers, so it’s pretty unbiased. He rates all the different manufacturers for each product too.
I’ve been considering calling the platform FascX. Not sure how well it works though.