[hornychz]

Congratulations on a fantastic piece of construction. 
....
Is it possible you could advise me of the supplier to see if I can obtain one in Australia.
...
Jim

Hi Jim,

And 1) thank you 
2) of course, that is obvious:
I found it on eBay, it costed about USD 45:

345x258x145mm Plastic Enclosure Connection Box Project Case Instrument Shell

I look forward to photos of your device ...