I've previously used priceusa.com.au to buy some cutlery from US Amazon - so funny that some things can't be shipped here, but they were very helpful.

I’d try Molmic. There is also Urban Rhythm and Lounge Lovers. What attracts you to this sofa? If it’s just the slip overs then IKEA have a good range of loose cover sofas and you can get custom cushions and covers imported from the UK for quite a good price. If it’s the extra depth then you will probably need custom made. Google the suppliers suggested.

If there are any architects out there that see this response, and need what we have to offer, give us a call. we would be happy to explain it further and work with you on a project. Available anywhere in Australia and overseas. It will save your client money.... often needed!! 0438619424

https://www.fabricmill.com/coral-reef-oceanside.html. On their site there is no mention of shipping os, they use UPS. UPS ships to Australia. I suggest emailing or ringing. I have got fabric from Fabric.com. Great service, 7 days to Qld pre-Covic. Be aware that it is usually multiples of US price for us.