Hi Owen,
There is very limited information on EGing panels so generally this is not a good sign. Also if there is no Australian support office then I wouldn’t trust that the company will be around if there is a warranty issue in the future.
If you are looking for a ‘cheaper’ system I would stick with one of the many well known, trusted, and cost effective brands such as Trina Solar, Jinko Solar, JA Solar, Longi Solar etc…