hey there swany. I'm from Australia too (don't let my name fool you)
The 'best' place to buy is a matter of opinion I guess, but most people on this forum will order from either inhouse pharmacy, united pharmacy, QHI, melonipharma and probably a few others I haven't mentioned. Some of the yanks here are fortunate enough to be able to obtain it from their local pharmacy on prescription (so jealous)
I'm not sure where the other Australian members of this forum purchase from but I have ordered GSK avodart from Melonipharma and QHI before without any problem although i stopped using Melonipharma because i got pissed off with their website. I've used Inhouse and united for the generics before as well- I had a bad experience with united so i'll never be ordering from them again (although many other members here have never had problems with them).
Like all prescription medications you buy online from overseas websites without having the appropriate prescription, there is absolutly no gaurentee that what you are buying is either safe or genuine- that is just the risk that we avodart users who can't buy it legitimatly within our own country are faced with. The only advice I could offer you is to order from one of the websites I mentioned above and keep checking back on websites like this, you'll be able to gain some kind of idea from the stories of other users about where is safe to order from and who can be trusted but like I said there are no guarentee's.
All the best!