The price is ok, but they are quite run of the mill products. I would get a comparison quote from a local business, ECG Electrical in Canberra gets good reviews.
Are you looking for fast payback, or quality products, or something in between?
Solar Panels
Phono Solar Technology Co. Ltd.
9.62 kW Total Solar Power
26 x 370 Watt Panels (PS370M4-20/UH)
12,797 kWh per year
SunGrow 8kW Single Phase Inverter
1-Phase 8kW of Inverter Power Sungrow Power Supply Co., Ltd.1 x SG8K-D Premium
10 Years** Product Warranty
Built-in Certified DC Isolator
7*24H Monitoring
Arc Fault Detection
Natural Cooling
$7265
how is this quote do you think