When buying from the factory outlet, take 10% off the price of the "regular" speakers. For the M80s, that's $110 US dollars. If you can convert that amount to Australian dollars and subtract it from Amie's quote, you'll know how much the Outlet M80s would cost you.
I don't know how much of the price Amie quoted is shipping, but she won't mind if you email her again and ask for a quote based on the Factory Outlet price of the M80s. She quoted you that price based on FedEx 4 day shipping. You might ask her if there is a less expensive method of shipping to Australia.
Sure is nice to have folks from other countries here. Hope it works out for you.