maybe im paranoid
yes. just go to
http://www.paypal.com.au/au and do your stuff.
You are not being redirected, you are not being sent to something that looks like it. YOU typed it in. Should be good.
When you attempt to login/auth it should flip to a HTTPS session (ie more secure).
If you hover your mouse over the Login button you should see a
https://www.paypal.com.au/au in your status bar. If that string is complete, rather than have some funny http address further along it, then you are on the legit page.
You are right to show some concern. Always look at the potential address some link resolves to, before clicking on it. No different to many other things in life. I have seen some amazing pieces of work to fool you into thinking you are on the real page, but if you are sensible and alert, it is going to be rare to be caught out.
Luke