Reviving this thread https://www.ozbargain.com.au/node/144213 because its expired
Just ordered and it came out to $46.02 delivered using the Amazon AUD conversion.
Cheaper with delivery than anything on staticice
http://www.staticice.com.au/cgi-bin/search.cgi?q=logitech+m5…
Or you can pay $100 at dicksmiths?
Good deal, but only if you're right-handed.