I am making my our wedding cake, I don't have the skills or the time atm to make the sugar flowers for my cake.
Any ideas where I can buy flower sprays of good quality in Australia, or somewhere overseas thats post here, thank you for your help.

eBay!

I've bought supplies (not pre-made flowers though) from here before several times
http://www.champagnecakes.com.au/flowers-and-cases-page-1.html

(the website is a little primitive in that it doesn't have a shopping cart, but they are reliable)